Question

A car travelling along a highway must uniformly reduce its velocity to 15 m/s in 3.5 s. The displacement during that time is 70m. What is the car's initial velocity? m/s (answer in 2 sig figs) What is the car's average acceleration? m/s2 (answer in 2 sig figs)

Answer 1

The top answer is correct

Answer 2

a) What is the car’s average acceleration?

5.33 m/s^2 [Backward]

b) What is its initial velocity?

27.99 m/s [Foreward]