Answer to Question #301571 in Physics for mosh

Question #301571

A tennis ball is traveling at 40 m/s and has a kinetic energy of 80 J. Calculate the mass of the tennis ball. *

Expert's answer

The kinetic energy of a ball

"E_k=\\frac{mv^2}{2}"

Hence, the mass of a ball

"m=\\frac{2E_k}{v^2}=\\frac{2*80}{40^2}=0.1\\:\\rm kg"

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