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SI unit for speed/velocity

m/s (meters per second)

SI unit for acceleration

m/s² (meters per second squared)

Positive accelerations

speed is increasing

Negative accelerations

speed is decreasing

Acceleration is zero

the object is not chaning speed (is not moving or is moving with constant speed)

Positive velocity

object moving forward

Negative velocity

object moving backwards

Velocity is zero

object is not moving


speed and direction

Speeding up, slowing down, turning

examples of acceleration (3)

velocity formula

v = d/t

acceleration formula

a = ∆v/t


∆v = vf - vi

SI unit for distance


SI unit for time


Graph: distance vs. time (slope)

slope = velocity

Graph: velocity (speed) vs. time (slope)

slope = acceleration

On a speed vs. time graph, constant acceleration is represented by...

A straight line

On a distance vs. time graph, constant velocity is represented by

A straight line

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