Question

roller coaster is moving at 2 m/s at the bottom of a hill 3 sec later. It reaches the top of the hill moving at 10m/s. What was the acceleration of the coaster ?

Answer 1

Answer:

2.67 m s^-2

Explanation:

Roller coaster's initial velocity (u) = 2 m/s

Time (t) = 3 s

Final velocity (v) = 10 m/s

We know, Acceleration (a) = v-u/t

                                            = (10-2)/3

                                            = 8/3 m s^-2

                                            = 2.666 m s^-2

                                            = 2.67 m s^-2   (approx)