Question

When a roller coaster is coasting uphill and losing speed, its kinetic energy _____.

A. increases
B. decreases
C. stays the same

Answer 1

The kinetic energy should decrease.

Step-by-step explanation:

If it loses speed, then all the kinetic energy it once had dissipates. Even if it does go up, it's not gaining any speed.

Answer 2

b. decreases, because the speed/velocity is decreasing, as the kinetic energy is.