Question

A roller coaster is moving at 30 m/s at the bottom of a hill. Five seconds later it reaches the top of the hill moving at 10 m/s. What was the acceleration of the coaster

Answer 1

Ok

Step-by-step explanation:

Acceleration = final velocity - initial velocity
-----------------------------------
time taken

Initial velocity = 10m/s
Finaly velocity = 30m/s

time taken = 5 secs
Acceleration = 10-30/5
= -20/5
= -4 m/s^2