Question

While traveling along a highway a driver slows from 24 m/s to 15 m/s in 12 seconds. What is the automobile’s acceleration?

Answer 1

Answer:

Answer is -0.75 m/s^2

Explanation:

We know that acceleration= final velocity - initial velocity/time taken

Here final velocity is 15 m/s

Initial velocity is 24 m/s

Time is 12 seconds

Hence acceleration=15-24/12=-9/12= -0.75 m/s^2

Hence acceleration(retardation) is -0.75 m/s^2