9. Work & Energy
Net Work & Work-Energy Theorem
9. Work & Energy Net Work & Work-Energy Theorem
26PRACTICE PROBLEM
A 70 kg skier comes to a stop after skiing down a hill. The kinetic energy she had at the top of the hill is converted into thermal energy by the friction between the skis and the snow. If 4200 J of energy is generated, what was the skier's initial speed at the top of the hill? (Assume all the energy is converted into thermal energy)
A 70 kg skier comes to a stop after skiing down a hill. The kinetic energy she had at the top of the hill is converted into thermal energy by the friction between the skis and the snow. If 4200 J of energy is generated, what was the skier's initial speed at the top of the hill? (Assume all the energy is converted into thermal energy)