# Physics equations/02-One dimensional kinematics/Q:definitions

1 A car traveling at 35.3 miles/hour stops in 4.3 seconds. What is the average acceleration?

 a) 2.06 x 100 m/s2 b) 3.67 x 100 m/s2 c) 6.53 x 100 m/s2 d) 1.16 x 101 m/s2 e) 2.06 x 101 m/s2

2 A car completes a complete circle of radius 3.1 miles at a speed of 51 miles per hour. How many minutes does it take?

 a) 7.25 x 100 minutes b) 9.66 x 100 minutes c) 1.29 x 101 minutes d) 1.72 x 101 minutes e) 2.29 x 101 minutes

3 A car traveling at 21.3 mph increases its speed to 24.2 mph in 1.4seconds. What is the average acceleration?

 a) 9.26 x 10-1 m/s2 b) 1.65 x 100 m/s2 c) 2.93 x 100 m/s2 d) 5.21 x 100 m/s2 e) 9.26 x 100 m/s2

4 Mr. Smith is backing his car at a speed of 3.28 mph when he hits a cornfield (seed corn). In the course of 1.92 seconds he stops, puts his car in forward drive, and exits the field at a speed of 5.66 mph. What was the magnitude ( absolute value) of his acceleration?

 a) 2.94 x 100 miles per hour per second b) 3.7 x 100 miles per hour per second c) 4.66 x 100 miles per hour per second d) 5.86 x 100 miles per hour per second e) 7.38 x 100 miles per hour per second