Question

A roller coaster is moving at 25 m/s at the bottom of a hill. Three seconds later it reaches the top of the hill moving at 10 m/s. What was the acceleration of the coaster?

Answer 1

Acceleration = 5 m/s2

Step-by-step explanation:

As, acceleration is the rate of change of velocity per unit time, we have the formula;

acceleration = change in velocity / change in time

a = 25 m/s - 10 m/s / 3 seconds

a = 15 m/s / 3 seconds

a = 5 m/s.s

a = 5 m/s2

So, the acceleration of the roller coaster is 5 m/s2