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A 55-kg girl is riding a 5 kg bike with 5 m/s on a ramp with...

A 55-kg girl is riding a 5 kg bike with 5 m/s on a ramp with 4 meters height and 8 meters length. The ramp makes 30 degrees angle with the ground. a) What is her speed at the bottom of the ramp if there is no sliding friction b) What is her speed at the bottom of the ramp if there is the coefficient of friction is mu=0.1

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