Question

You serve a volleyball with a mass of 2.1 kg the ball leaves your hand with the speed of 30 m/s the ball has kinetic energy calculate it

Answer 1

945 J

Explanation:

ball mass : m1=2.1kg

Speed of ball: V=30m/s

K=?

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Use equation for Kinetic energy:

K=m*V²/2

K=2.1kg*(30m/s)²/2

K=(2.1kg*900m²/s²)/2

K=945J