Question

What constant acceleration is required to increase the speed of a car from 30 mi/h to 52 mi/h in 5 seconds? (Round your answer to two decimal places.)

Answer 1

`a = 9.84 m/s^2`

Explanation:

Given:

Initial speed (Vi) = 30 mi/h = 67.1 m/s

Final speed (Vf) = 52 mi/h = 116.32

Time period(t) = 5 seconds

We know the formula of acceleration in terms of initial speed, final speed and time:

`a = (Vf -Vi)/(t)`

`a = (116.32-67.10)/(5)`

`a = 9.84 m/s^2`