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The car of an amusement park ride with mass m=90 kg slides along a track that...

The car of an amusement park ride with mass m=90 kg slides along a track that we can consider as frictionless. Initially it is at position A at a height 11.6 m above the ground and moving with speed 4.0 m/s. It moves through a valley and over a second hill at position B at a height 7.3 m above the ground. Find the speed of the car when it is at position B.

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Answer #1

Apply conservation of energy at point A and B to get the speed at B.

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