Suppose you increase your walking speed from 6 m/s to 15 m/s in a period of 2 s. What is your acceleration?

Answer

4.5 m/s²

Explanation

Acceleration is defined as the rate of change of velocity with time.

The formula for finding acceleration is = change in velocity/change in time

change in velocity=15m/s - 6m/s=9m/s

change in time = 2s-0s=2s

Acceleration is given by⇒9m/s : 2s = 4.5m/s²