Stupid science......
Classical Mechanics
Level
pending
A mass of 100 g strikes the wall with speed 5 m/s at an angle of 60° with the wall and it rebounds with the same speed. If the contact time is 2 × 10^{-3} seconds, what is the force applied by the wall ?
250\sqrt {3} N
250 N
500\sqrt {3} N
500 N
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