# QB/a03 2Dkinem 2dmotion

< QB

Jump to navigation
Jump to search
- Quizbank now resides on MyOpenMath at
**https://www.myopenmath.com**(although I hope Wikiversity can play an important role in helping students and teachers use these questions!) - At the moment, most of the physics questions have already been transferred. To see them, join myopenmath.com as a student, and "enroll" in one or both of the following courses:
- Quizbank physics 1 (id
**60675**) - Quizbank physics 2 (id
**61712**) - Quizbank astronomy (id
**63705**)

- Quizbank physics 1 (id

**The enrollment key for each course is 123.** They are all is set to practice mode, giving students unlimited attempts at each question. Instructors can also print out copies of the quiz for classroom use. If you have any problems leave a message at user talk:Guy vandegrift.

- Latest essay: MyOpenMath/Pulling loose threads
- Latest lesson: Phasor algebra

See special:permalink/1863096 for a wikitext version of this quiz.

### LaTexMarkup begin

```
%[[File:Quizbankqb_{{SUBPAGENAME}}.pdf|thumb|See[[:File:Quizbankqb_{{SUBPAGENAME}}.pdf]]]]
%CurrentID: {{REVISIONID}}
%PDF: [[:File:Quizbankqb_{{SUBPAGENAME}}.pdf]]%Required images: [[file:Wikiversity-logo-en.svg|20px]]
%This code creates both the question and answer key using \newcommand\mytest
%%% EDIT QUIZ INFO HERE %%%%%%%%%%%%%%%%%%%%%%%%%%%
\newcommand{\quizname}{QB/a03_2Dkinem_2dmotion}
\newcommand{\quiztype}{numerical}%[[Category:QB/numerical]]
%%%%% PREAMBLE%%%%%%%%%%%%
\newif\ifkey %estabkishes Boolean ifkey to turn on and off endnotes
\documentclass[11pt]{exam}
\RequirePackage{amssymb, amsfonts, amsmath, latexsym, verbatim,
xspace, setspace,datetime}
\RequirePackage{tikz, pgflibraryplotmarks, hyperref}
\usepackage[left=.5in, right=.5in, bottom=.5in, top=.75in]{geometry}
\usepackage{endnotes, multicol,textgreek} %
\usepackage{graphicx} %
\singlespacing %OR \onehalfspacing OR \doublespacing
\parindent 0ex % Turns off paragraph indentation
\hypersetup{ colorlinks=true, urlcolor=blue}
% BEGIN DOCUMENT
\begin{document}
\title{a03\_2Dkinem\_2dmotion}
\author{The LaTex code that creates this quiz is released to the Public Domain\\
Attribution for each question is documented in the Appendix}
\maketitle
\begin{center}
\includegraphics[width=0.15\textwidth]{666px-Wikiversity-logo-en.png}
\\Latex markup at\\
\footnotesize{ \url{https://en.wikiversity.org/wiki/special:permalink/1863096}}
\end{center}
\begin{frame}{}
\begin{multicols}{3}
\tableofcontents
\end{multicols}
\end{frame}
\pagebreak\section{Quiz}
\keytrue
\printanswers
\begin{questions}
\question A ball is kicked horizontally from a height of 2.3 m, at a speed of 7.8m/s. How far does it travel before landing?\ifkey\endnote{a03\_2Dkinem\_2dmotion\_1 placed in Public Domain by Guy Vandegrift: {\url{https://en.wikiversity.org/wiki/special:permalink/1863096}}}\fi
\begin{choices}
\choice 3.09 m.
\choice 3.71 m.
\choice 4.45 m.
\CorrectChoice 5.34 m.
\choice 6.41 m.
\end{choices}
\question A particle is initially at the origin and moving in the x direction at a speed of 3.7 m/s. It has an constant acceleration of 2.3 m/s\textsuperscript{2} in the y direction, as well as an acceleration of 0.5 in the x direction. What angle does the velocity make with the x axis at time t = 2.8 s?\ifkey\endnote{a03\_2Dkinem\_2dmotion\_2 placed in Public Domain by Guy Vandegrift: {\url{https://en.wikiversity.org/wiki/special:permalink/1863096}}}\fi
\begin{choices}
\CorrectChoice 51.62 degrees.
\choice 59.37 degrees.
\choice 68.27 degrees.
\choice 78.51 degrees.
\choice 90.29 degrees.
\end{choices}
\question At time, t=0, two particles are on the x axis. Particle A is (initially) at the origin and moves at a constant speed of 7.29 m/s at an angle of \straighttheta\ above the x-axis. Particle B is initially situated at x= 2.75 m, and moves at a constant speed of 2.98 m/s in the +y direction. At what time do they meet?\ifkey\endnote{a03\_2Dkinem\_2dmotion\_3 placed in Public Domain by Guy Vandegrift: {\url{https://en.wikiversity.org/wiki/special:permalink/1863096}}}\fi
\begin{choices}
\choice 0.24 s.
\choice 0.29 s.
\choice 0.34 s.
\CorrectChoice 0.41 s.
\choice 0.5 s.
\end{choices}
\question At time, t=0, two particles are on the x axis. Particle A is (initially) at the origin and moves at a constant speed of 7.17 m/s at an angle of \straighttheta\ above the x-axis. Particle B is initially situated at x= 2.04 m, and moves at a constant speed of 2.52 m/s in the +y direction. What is the value of \straighttheta\ (in radians)?\ifkey\endnote{a03\_2Dkinem\_2dmotion\_4 placed in Public Domain by Guy Vandegrift: {\url{https://en.wikiversity.org/wiki/special:permalink/1863096}}}\fi
\begin{choices}
\choice 0.27 radians.
\choice 0.31 radians.
\CorrectChoice 0.36 radians.
\choice 0.41 radians.
\choice 0.47 radians.
\end{choices}
\end{questions}
\newpage\section{Renditions}
\subsection{}%%%% subsection 1
\begin{questions} %%%%%%% begin questions
\question A ball is kicked horizontally from a height of 2.7 m, at a speed of 7.5m/s. How far does it travel before landing?
\begin{choices} %%%%%%% begin choices
\choice 3.22 m.
\choice 3.87 m.
\choice 4.64 m.
\CorrectChoice 5.57 m.
\choice 6.68 m.
\end{choices} %%% end choices
\question A ball is kicked horizontally from a height of 2.2 m, at a speed of 9.8m/s. How far does it travel before landing?
\begin{choices} %%%%%%% begin choices
\CorrectChoice 6.57 m.
\choice 7.88 m.
\choice 9.46 m.
\choice 11.35 m.
\choice 13.62 m.
\end{choices} %%% end choices
\question A ball is kicked horizontally from a height of 2.9 m, at a speed of 7.4m/s. How far does it travel before landing?
\begin{choices} %%%%%%% begin choices
\choice 4.74 m.
\CorrectChoice 5.69 m.
\choice 6.83 m.
\choice 8.2 m.
\choice 9.84 m.
\end{choices} %%% end choices
\question A ball is kicked horizontally from a height of 2.6 m, at a speed of 7.7m/s. How far does it travel before landing?
\begin{choices} %%%%%%% begin choices
\choice 4.67 m.
\CorrectChoice 5.61 m.
\choice 6.73 m.
\choice 8.08 m.
\choice 9.69 m.
\end{choices} %%% end choices
\question A ball is kicked horizontally from a height of 2.8 m, at a speed of 7.9m/s. How far does it travel before landing?
\begin{choices} %%%%%%% begin choices
\choice 3.46 m.
\choice 4.15 m.
\choice 4.98 m.
\CorrectChoice 5.97 m.
\choice 7.17 m.
\end{choices} %%% end choices
\question A ball is kicked horizontally from a height of 3 m, at a speed of 7.6m/s. How far does it travel before landing?
\begin{choices} %%%%%%% begin choices
\choice 2.87 m.
\choice 3.44 m.
\choice 4.13 m.
\choice 4.96 m.
\CorrectChoice 5.95 m.
\end{choices} %%% end choices
\question A ball is kicked horizontally from a height of 2.5 m, at a speed of 8.7m/s. How far does it travel before landing?
\begin{choices} %%%%%%% begin choices
\choice 3.6 m.
\choice 4.32 m.
\choice 5.18 m.
\CorrectChoice 6.21 m.
\choice 7.46 m.
\end{choices} %%% end choices
\question A ball is kicked horizontally from a height of 2 m, at a speed of 6.2m/s. How far does it travel before landing?
\begin{choices} %%%%%%% begin choices
\choice 2.75 m.
\choice 3.3 m.
\CorrectChoice 3.96 m.
\choice 4.75 m.
\choice 5.7 m.
\end{choices} %%% end choices
\question A ball is kicked horizontally from a height of 2 m, at a speed of 7.7m/s. How far does it travel before landing?
\begin{choices} %%%%%%% begin choices
\choice 2.85 m.
\choice 3.42 m.
\choice 4.1 m.
\CorrectChoice 4.92 m.
\choice 5.9 m.
\end{choices} %%% end choices
\question A ball is kicked horizontally from a height of 3 m, at a speed of 10m/s. How far does it travel before landing?
\begin{choices} %%%%%%% begin choices
\choice 6.52 m.
\CorrectChoice 7.82 m.
\choice 9.39 m.
\choice 11.27 m.
\choice 13.52 m.
\pagebreak
\end{choices}
\end{questions}%%%%%%%% end questions
\subsection{}%%%% subsection 2
\begin{questions} %%%%%%% begin questions
\question A particle is initially at the origin and moving in the x direction at a speed of 4.3 m/s. It has an constant acceleration of 2.2 m/s\textsuperscript{2} in the y direction, as well as an acceleration of 0.3 in the x direction. What angle does the velocity make with the x axis at time t = 2.8 s?
\begin{choices} %%%%%%% begin choices
\choice 37.93 degrees.
\choice 43.62 degrees.
\CorrectChoice 50.16 degrees.
\choice 57.68 degrees.
\choice 66.33 degrees.
\end{choices} %%% end choices
\question A particle is initially at the origin and moving in the x direction at a speed of 4.3 m/s. It has an constant acceleration of 1.8 m/s\textsuperscript{2} in the y direction, as well as an acceleration of 0.3 in the x direction. What angle does the velocity make with the x axis at time t = 2.5 s?
\begin{choices} %%%%%%% begin choices
\choice 36.26 degrees.
\CorrectChoice 41.7 degrees.
\choice 47.96 degrees.
\choice 55.15 degrees.
\choice 63.43 degrees.
\end{choices} %%% end choices
\question A particle is initially at the origin and moving in the x direction at a speed of 4.1 m/s. It has an constant acceleration of 2.3 m/s\textsuperscript{2} in the y direction, as well as an acceleration of 0.5 in the x direction. What angle does the velocity make with the x axis at time t = 2.7 s?
\begin{choices} %%%%%%% begin choices
\choice 32.04 degrees.
\choice 36.85 degrees.
\choice 42.37 degrees.
\CorrectChoice 48.73 degrees.
\choice 56.04 degrees.
\end{choices} %%% end choices
\question A particle is initially at the origin and moving in the x direction at a speed of 3.7 m/s. It has an constant acceleration of 1.5 m/s\textsuperscript{2} in the y direction, as well as an acceleration of 0.6 in the x direction. What angle does the velocity make with the x axis at time t = 2.1 s?
\begin{choices} %%%%%%% begin choices
\choice 21.32 degrees.
\choice 24.51 degrees.
\choice 28.19 degrees.
\CorrectChoice 32.42 degrees.
\choice 37.28 degrees.
\end{choices} %%% end choices
\question A particle is initially at the origin and moving in the x direction at a speed of 4.1 m/s. It has an constant acceleration of 1.9 m/s\textsuperscript{2} in the y direction, as well as an acceleration of 0.9 in the x direction. What angle does the velocity make with the x axis at time t = 2.4 s?
\begin{choices} %%%%%%% begin choices
\choice 27.27 degrees.
\choice 31.37 degrees.
\CorrectChoice 36.07 degrees.
\choice 41.48 degrees.
\choice 47.7 degrees.
\end{choices} %%% end choices
\question A particle is initially at the origin and moving in the x direction at a speed of 3.9 m/s. It has an constant acceleration of 1.9 m/s\textsuperscript{2} in the y direction, as well as an acceleration of 0.5 in the x direction. What angle does the velocity make with the x axis at time t = 2.5 s?
\begin{choices} %%%%%%% begin choices
\choice 37.12 degrees.
\CorrectChoice 42.69 degrees.
\choice 49.09 degrees.
\choice 56.45 degrees.
\choice 64.92 degrees.
\end{choices} %%% end choices
\question A particle is initially at the origin and moving in the x direction at a speed of 4 m/s. It has an constant acceleration of 1.8 m/s\textsuperscript{2} in the y direction, as well as an acceleration of 0.6 in the x direction. What angle does the velocity make with the x axis at time t = 2.7 s?
\begin{choices} %%%%%%% begin choices
\CorrectChoice 40.85 degrees.
\choice 46.98 degrees.
\choice 54.03 degrees.
\choice 62.13 degrees.
\choice 71.45 degrees.
\end{choices} %%% end choices
\question A particle is initially at the origin and moving in the x direction at a speed of 3.8 m/s. It has an constant acceleration of 2.1 m/s\textsuperscript{2} in the y direction, as well as an acceleration of 0.6 in the x direction. What angle does the velocity make with the x axis at time t = 2.9 s?
\begin{choices} %%%%%%% begin choices
\choice 31.37 degrees.
\choice 36.07 degrees.
\choice 41.48 degrees.
\CorrectChoice 47.71 degrees.
\choice 54.86 degrees.
\end{choices} %%% end choices
\question A particle is initially at the origin and moving in the x direction at a speed of 4.1 m/s. It has an constant acceleration of 1.5 m/s\textsuperscript{2} in the y direction, as well as an acceleration of 0.7 in the x direction. What angle does the velocity make with the x axis at time t = 2.2 s?
\begin{choices} %%%%%%% begin choices
\choice 17.34 degrees.
\choice 19.94 degrees.
\choice 22.94 degrees.
\choice 26.38 degrees.
\CorrectChoice 30.33 degrees.
\end{choices} %%% end choices
\question A particle is initially at the origin and moving in the x direction at a speed of 3.9 m/s. It has an constant acceleration of 2.2 m/s\textsuperscript{2} in the y direction, as well as an acceleration of 0.8 in the x direction. What angle does the velocity make with the x axis at time t = 2.9 s?
\begin{choices} %%%%%%% begin choices
\choice 26.14 degrees.
\choice 30.07 degrees.
\choice 34.58 degrees.
\choice 39.76 degrees.
\CorrectChoice 45.73 degrees.
\pagebreak
\end{choices}
\end{questions}%%%%%%%% end questions
\subsection{}%%%% subsection 3
\begin{questions} %%%%%%% begin questions
\question At time, t=0, two particles are on the x axis. Particle A is (initially) at the origin and moves at a constant speed of 5.42 m/s at an angle of \straighttheta\ above the x-axis. Particle B is initially situated at x= 2.89 m, and moves at a constant speed of 2.26 m/s in the +y direction. At what time do they meet?
\begin{choices} %%%%%%% begin choices
\choice 0.49 s.
\CorrectChoice 0.59 s.
\choice 0.7 s.
\choice 0.84 s.
\choice 1.01 s.
\end{choices} %%% end choices
\question At time, t=0, two particles are on the x axis. Particle A is (initially) at the origin and moves at a constant speed of 7.03 m/s at an angle of \straighttheta\ above the x-axis. Particle B is initially situated at x= 2.12 m, and moves at a constant speed of 2 m/s in the +y direction. At what time do they meet?
\begin{choices} %%%%%%% begin choices
\choice 0.15 s.
\choice 0.18 s.
\choice 0.22 s.
\choice 0.26 s.
\CorrectChoice 0.31 s.
\end{choices} %%% end choices
\question At time, t=0, two particles are on the x axis. Particle A is (initially) at the origin and moves at a constant speed of 6.54 m/s at an angle of \straighttheta\ above the x-axis. Particle B is initially situated at x= 2.91 m, and moves at a constant speed of 2.42 m/s in the +y direction. At what time do they meet?
\begin{choices} %%%%%%% begin choices
\CorrectChoice 0.48 s.
\choice 0.57 s.
\choice 0.69 s.
\choice 0.83 s.
\choice 0.99 s.
\end{choices} %%% end choices
\question At time, t=0, two particles are on the x axis. Particle A is (initially) at the origin and moves at a constant speed of 5.43 m/s at an angle of \straighttheta\ above the x-axis. Particle B is initially situated at x= 2.49 m, and moves at a constant speed of 2.75 m/s in the +y direction. At what time do they meet?
\begin{choices} %%%%%%% begin choices
\choice 0.26 s.
\choice 0.31 s.
\choice 0.37 s.
\choice 0.44 s.
\CorrectChoice 0.53 s.
\end{choices} %%% end choices
\question At time, t=0, two particles are on the x axis. Particle A is (initially) at the origin and moves at a constant speed of 5.86 m/s at an angle of \straighttheta\ above the x-axis. Particle B is initially situated at x= 2.46 m, and moves at a constant speed of 2.23 m/s in the +y direction. At what time do they meet?
\begin{choices} %%%%%%% begin choices
\CorrectChoice 0.45 s.
\choice 0.54 s.
\choice 0.65 s.
\choice 0.78 s.
\choice 0.94 s.
\end{choices} %%% end choices
\question At time, t=0, two particles are on the x axis. Particle A is (initially) at the origin and moves at a constant speed of 6.76 m/s at an angle of \straighttheta\ above the x-axis. Particle B is initially situated at x= 2.65 m, and moves at a constant speed of 2.8 m/s in the +y direction. At what time do they meet?
\begin{choices} %%%%%%% begin choices
\choice 0.21 s.
\choice 0.25 s.
\choice 0.3 s.
\choice 0.36 s.
\CorrectChoice 0.43 s.
\end{choices} %%% end choices
\question At time, t=0, two particles are on the x axis. Particle A is (initially) at the origin and moves at a constant speed of 7.34 m/s at an angle of \straighttheta\ above the x-axis. Particle B is initially situated at x= 2.22 m, and moves at a constant speed of 2.91 m/s in the +y direction. At what time do they meet?
\begin{choices} %%%%%%% begin choices
\choice 0.23 s.
\choice 0.27 s.
\CorrectChoice 0.33 s.
\choice 0.4 s.
\choice 0.47 s.
\end{choices} %%% end choices
\question At time, t=0, two particles are on the x axis. Particle A is (initially) at the origin and moves at a constant speed of 5.49 m/s at an angle of \straighttheta\ above the x-axis. Particle B is initially situated at x= 2.35 m, and moves at a constant speed of 2.6 m/s in the +y direction. At what time do they meet?
\begin{choices} %%%%%%% begin choices
\choice 0.41 s.
\CorrectChoice 0.49 s.
\choice 0.58 s.
\choice 0.7 s.
\choice 0.84 s.
\end{choices} %%% end choices
\question At time, t=0, two particles are on the x axis. Particle A is (initially) at the origin and moves at a constant speed of 5.94 m/s at an angle of \straighttheta\ above the x-axis. Particle B is initially situated at x= 2.92 m, and moves at a constant speed of 2.89 m/s in the +y direction. At what time do they meet?
\begin{choices} %%%%%%% begin choices
\choice 0.33 s.
\choice 0.39 s.
\choice 0.47 s.
\CorrectChoice 0.56 s.
\choice 0.68 s.
\end{choices} %%% end choices
\question At time, t=0, two particles are on the x axis. Particle A is (initially) at the origin and moves at a constant speed of 6.1 m/s at an angle of \straighttheta\ above the x-axis. Particle B is initially situated at x= 2.79 m, and moves at a constant speed of 2.87 m/s in the +y direction. At what time do they meet?
\begin{choices} %%%%%%% begin choices
\choice 0.43 s.
\CorrectChoice 0.52 s.
\choice 0.62 s.
\choice 0.75 s.
\choice 0.9 s.
\pagebreak
\end{choices}
\end{questions}%%%%%%%% end questions
\subsection{}%%%% subsection 4
\begin{questions} %%%%%%% begin questions
\question At time, t=0, two particles are on the x axis. Particle A is (initially) at the origin and moves at a constant speed of 5.15 m/s at an angle of \straighttheta\ above the x-axis. Particle B is initially situated at x= 2.05 m, and moves at a constant speed of 2.94 m/s in the +y direction. What is the value of \straighttheta\ (in radians)?
\begin{choices} %%%%%%% begin choices
\choice 0.46 radians.
\choice 0.53 radians.
\CorrectChoice 0.61 radians.
\choice 0.7 radians.
\choice 0.8 radians.
\end{choices} %%% end choices
\question At time, t=0, two particles are on the x axis. Particle A is (initially) at the origin and moves at a constant speed of 8.02 m/s at an angle of \straighttheta\ above the x-axis. Particle B is initially situated at x= 2.27 m, and moves at a constant speed of 2.5 m/s in the +y direction. What is the value of \straighttheta\ (in radians)?
\begin{choices} %%%%%%% begin choices
\choice 0.18 radians.
\choice 0.21 radians.
\choice 0.24 radians.
\choice 0.28 radians.
\CorrectChoice 0.32 radians.
\end{choices} %%% end choices
\question At time, t=0, two particles are on the x axis. Particle A is (initially) at the origin and moves at a constant speed of 5.19 m/s at an angle of \straighttheta\ above the x-axis. Particle B is initially situated at x= 2.76 m, and moves at a constant speed of 2.86 m/s in the +y direction. What is the value of \straighttheta\ (in radians)?
\begin{choices} %%%%%%% begin choices
\choice 0.44 radians.
\choice 0.51 radians.
\CorrectChoice 0.58 radians.
\choice 0.67 radians.
\choice 0.77 radians.
\end{choices} %%% end choices
\question At time, t=0, two particles are on the x axis. Particle A is (initially) at the origin and moves at a constant speed of 5.11 m/s at an angle of \straighttheta\ above the x-axis. Particle B is initially situated at x= 2.69 m, and moves at a constant speed of 2.23 m/s in the +y direction. What is the value of \straighttheta\ (in radians)?
\begin{choices} %%%%%%% begin choices
\choice 0.26 radians.
\choice 0.3 radians.
\choice 0.34 radians.
\choice 0.39 radians.
\CorrectChoice 0.45 radians.
\end{choices} %%% end choices
\question At time, t=0, two particles are on the x axis. Particle A is (initially) at the origin and moves at a constant speed of 7.18 m/s at an angle of \straighttheta\ above the x-axis. Particle B is initially situated at x= 2.15 m, and moves at a constant speed of 2.88 m/s in the +y direction. What is the value of \straighttheta\ (in radians)?
\begin{choices} %%%%%%% begin choices
\choice 0.24 radians.
\choice 0.27 radians.
\choice 0.31 radians.
\choice 0.36 radians.
\CorrectChoice 0.41 radians.
\end{choices} %%% end choices
\question At time, t=0, two particles are on the x axis. Particle A is (initially) at the origin and moves at a constant speed of 6.27 m/s at an angle of \straighttheta\ above the x-axis. Particle B is initially situated at x= 2.38 m, and moves at a constant speed of 2.94 m/s in the +y direction. What is the value of \straighttheta\ (in radians)?
\begin{choices} %%%%%%% begin choices
\choice 0.42 radians.
\CorrectChoice 0.49 radians.
\choice 0.56 radians.
\choice 0.65 radians.
\choice 0.74 radians.
\end{choices} %%% end choices
\question At time, t=0, two particles are on the x axis. Particle A is (initially) at the origin and moves at a constant speed of 5.72 m/s at an angle of \straighttheta\ above the x-axis. Particle B is initially situated at x= 2 m, and moves at a constant speed of 2.02 m/s in the +y direction. What is the value of \straighttheta\ (in radians)?
\begin{choices} %%%%%%% begin choices
\choice 0.21 radians.
\choice 0.24 radians.
\choice 0.27 radians.
\choice 0.31 radians.
\CorrectChoice 0.36 radians.
\end{choices} %%% end choices
\question At time, t=0, two particles are on the x axis. Particle A is (initially) at the origin and moves at a constant speed of 5.42 m/s at an angle of \straighttheta\ above the x-axis. Particle B is initially situated at x= 2.27 m, and moves at a constant speed of 2.17 m/s in the +y direction. What is the value of \straighttheta\ (in radians)?
\begin{choices} %%%%%%% begin choices
\choice 0.27 radians.
\choice 0.31 radians.
\choice 0.36 radians.
\CorrectChoice 0.41 radians.
\choice 0.47 radians.
\end{choices} %%% end choices
\question At time, t=0, two particles are on the x axis. Particle A is (initially) at the origin and moves at a constant speed of 8.61 m/s at an angle of \straighttheta\ above the x-axis. Particle B is initially situated at x= 2.5 m, and moves at a constant speed of 2.43 m/s in the +y direction. What is the value of \straighttheta\ (in radians)?
\begin{choices} %%%%%%% begin choices
\choice 0.16 radians.
\choice 0.19 radians.
\choice 0.22 radians.
\choice 0.25 radians.
\CorrectChoice 0.29 radians.
\end{choices} %%% end choices
\question At time, t=0, two particles are on the x axis. Particle A is (initially) at the origin and moves at a constant speed of 8.49 m/s at an angle of \straighttheta\ above the x-axis. Particle B is initially situated at x= 2.73 m, and moves at a constant speed of 2.09 m/s in the +y direction. What is the value of \straighttheta\ (in radians)?
\begin{choices} %%%%%%% begin choices
\choice 0.14 radians.
\choice 0.16 radians.
\choice 0.19 radians.
\choice 0.22 radians.
\CorrectChoice 0.25 radians.
\end{choices} %%% end choices
\end{questions}\pagebreak
\section{Attribution}
\theendnotes
\end{document}
```