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In a water park, a 40 kg boy slides down a water slide and into a...

In a water park, a 40 kg boy slides down a water slide and into a pool of water. The boy starts
from rest and hits the water in the pool at a speed of 14 m/s. If the work done on the boy by
gravity is 6.5 kJ, how much work is done by friction?
a) -4.50 kJ b) -3.62 kJ c) -2.58 kJ d) -5.79 kJ e) -1.38 kJ

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