Question

The velocity of a car increases from 4 m/s at 2 sec. To 32 m/s at 9 sec. What is the car's average acceleration?

Answer 1

Acceleration,
`a=4\ m/s^2`

Explanation:

Given that,

Initial speed = 4 m/s at 2 seconds

Final speed = 32 m/s at 9 seconds

We need to find car's average acceleration. We know that average acceleration is equal to the change in speed divided by the change in time. So,

`a=(v_2-v_1)/(t_2-t_1)\\\\=(32-4)/(9-2)\\\\=(28)/(7)\\\\=4\ m/s^2`

So, the car's average acceleration is equal to
`4\ m/s^2`.