31-10-2016
Physics

contestada

A 1-kilogram ball has 8 joules of kinetic energy. What is its speed?

Respuesta :

01-11-2016

We know, K.E. = 1/2 mv²

8 = 1/2 * 1*v²

16 = v²

v = √16 = 4

So, velocity of the ball is 4 m/s

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