Question

9. Lucas is in a car traveling at 15 m/s. This car starts to decelerate

steadily. It comes to a complete stop in 10 seconds. What is it's
acceleration?

Answer 1

3/2 m / sec²

Explanation:

acceleration = change in velocity / time

Here, that would be

acc'n = 15 m/s / 10 s = 3/2 m / sec²