PeytD1
Answered

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You serve a volleyball with a mass of 2100 g. The ball leaves your hand with a velocity of 30 m/s. The ball has how much energy? Calculate it.

Sagot :

Answer:

945 J

Explanation

You have just given the ball kinetic energy, which is given by the following equation:

Ek=0.5xm×v2

So the energy the ball has the moment after you hit it is:

Ek=0.5×2.1×(30)2<— square

Ek=945J
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