A 1,200kg roller coaster car starts rolling up a slope at a speed of 15m/s. What is the highest point it could reach

11.36 m

Explanation:

Given

Mass of roller coaster is m=1200 kg

Initial speed of roller coaster is v=15 m/s

Energy at bottom and at the top is same i.e.

Thus, the highest point reach by the roller coaster is 11.36 m

11.36m

Explanation:

think about the oscillation of the toy shown in the video. when the toy is at the highest point of its motion, its velocity is zero and its acceleration is negative.