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22-03-2021
Mathematics

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a boy on his bike has a force of 5.6 n and is accelerating at 12/m/s/s with a speed of 17m/s what is the kinetic energy of the boy?

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22-03-2021

Answer:

67.4 J

Step-by-step explanation:

F = ma

5.6 = m(12)

mass of the boy = 7/15 kg

KE = (1/2)mv^2

KE = (1/2)(7/15)(17^2)

KE = 67.4 J (3 sig. fig.)

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