# High school physics/Basics

• Speed - Rate of change of position per unit of time. The formula of speed is ${\displaystyle v=}$${\displaystyle {\tfrac {d}{t}}}$ (speed = total distance/time elapsed).
• Displacement - The shortest distance from the initial position to the final position of the motion. The formula for displacement is ${\displaystyle {s}={x_{\textrm {f}}-x_{\textrm {i}}}=\Delta {x}}$ (displacement = final position - initial position).
• Velocity - The speed in a specific direction. The formula is ${\displaystyle v=}$${\displaystyle {\tfrac {d}{t}}}$ (velocity = displacement/time elapsed). It could be positive/negative and have a specific direction (North, south, east or west).