Problem based on rotational kinetic energy
If a 0.379 m radius hollow ball has a rotational kinetic energy of 2.924 J while spinning at 5.7 rad/seg, what is its mass?
A) 14.28 kg
B) 2.5 kg
C) 1.88 kg
D) 5.34 kg
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If it takes the ball 22.0 to stop once it is in contact with the catcher's glove, what average force did the ball exert on the catcher?
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The auto repair shop of Empire Motor Sales uses standards to control labor time and labor cost in the shop. The standard time for a motor tune-up is 3.5 hours
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