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11-03-2022
Physics

contestada

What is the mass of a child that has a KE of 400 J who is riding her bike at 3.9 m/s?

Respuesta :

mikhaeldonbosco mikhaeldonbosco

11-03-2022

Answer:

52.6 kg

Explanation:

KE = 1/2mv^2

400 = 1/2 x m x 3.9^2

m = 2(400 J)/ ( 3.9 m/s)^2

m = 52.6 kg

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