A hockey puck has a mass of 0.20 kg. If the hockey puck
is moving with 75 J of kinetic energy, what is its speed?
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Answer:
The velocity of the puck is 27.38 m/s.
Explanation:
Kinetic energy of the puck = 75J
1/2(mv²) = 75
1/2(0.2v²) = 75
0.1v² = 75
v² = 75/0.1 = 750
v = √750 = 27.38 m/s
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