Conservation of Mechanical Energy
A 500 kg roller coaster car travels along a frictionless track. At point A, the car is at a height of 20 m and has a speed of 5 m/s. At a later point B, the car’s speed is 15 m/s. What is the height of the car at point B?
A
15 m
B
5 m
C
10 m
D
0 m
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