A girl and her bicycle have a total mass of 40.0 kg.At the top of the hill her speed is 5.0 m/s, and her speed doubles as she rides down

A girl and her bicycle have a total mass of 40.0 kg.At the top of the hill her speed is 5.0 m/s, and her speed doubles as she rides down the hill.The hill is 10.0 m high and 100 m long.How much kinetic energy and potential energy is lost to friction?
A)2 420 J
B)1 500 J
C)2 000 J
D)3 920 J

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