Vale9214 Vale9214
  • 16-01-2023
  • Physics
contestada

A 57.5-kg skateboarder starts out with a speed of 1.95 m/s. He does 80.0 J of work on himself by pushing with his feet against the ground. In addition, friction does -265 J of work on him. In both cases, the forces doing the work are nonconservative. The final speed of the skateboarder is 6.20 m/s.

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