Question

A 30 kg boy sitting on a 10 kg go-kart wants to travel down a hill of height 10 m, starting from rest.

a. What is the initial potential energy of the boy and go-kart together?
b. What is their initial kinetic energy?

Answers

  1. a. Initial potential (gravitational potential)
    Ep=mgh
    Ep=(30+10)(9.8)(10)
    Ep=(40)(98)
    Ep=3920

    b. Initial kinetic energy=0 as velocity is 0 (starts from rest) and Kinetic energy is = 1/2mv²

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