3. Suppose a motorcyclist rides a certain high-speed

Answered question

2022-01-24

3. Suppose a motorcyclist rides a certain high-speed motorcycle. He reaches top speed and then coasts up a hill. The maximum height reached by the motorcyclist is 250.0 m. If 2.55 ◊ 105 J of kinetic energy is dissipated by friction, what was the initial speed of the motorcycle? The combined mass of the motorcycle and motorcyclist is 250.0 kg.

Answer & Explanation

Vasquez

Vasquez

Expert2022-01-26Added 669 answers

PE=mgh=2509.81250=613125 J
PE+WFriction=KE
KE=6.13105 J+2.55105=8.68105 J
12mv2=KE
v=8.681052250
v=83.3 m/s

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