Question

A 100-g toy car moves along a curved frictionless track. At first, the car runs along a flat horizontal segment with an initial velocity of 2.91 m/s. The car then runs up the frictionless slope, gaining 0.104 m in altitude before leveling out to another horizontal segment at the higher level. What is the final velocity of the car if we neglect air resistance?

Answer 1

Concept: use energy conservation to find the final speed as shown below. In absence of friction energy will be conserved

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