A girl and her bicycle have a total mass of 40 kg. At the top of the hill her speed is 5.0 m/s. The hill is 10 m high and 100 m long. If the force of friction as she rides down the hill is 24 N, what is her speed at the bottom?
a. 5.0 m/s
c. 11 m/s
b. 10 m/s
d. She stops before she reaches the bottom.
B
Physics & Space Science
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