Question

A race car's velocity increases from +28 m/s to +36 m/s over a 2.0-s time interval. What is the car's

average acceleration? (in m/s/s)

Answer 1

`4 m/s^(2)`

Step-by-step explanation:

Acceleration,
`a=\frac {v-u}{t}`

Where v and u are the final and initial velocities of the race car respectively, t is the time taken for the race car to attain velocity of 36 m/s.

Substituting 36 m/s for v, 28 m/s for u and 2 s for t then

`a=\frac {36 m/s-28 m/s}{2}=4 m/s^(2)`