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 po

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?

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Bình An 1 year 2021-09-04T15:45:25+00:00 1 Answers 9 views 0

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    2021-09-04T15:47:04+00:00

    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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