A 75 kg road bicycle racer rides down the highway from Pike’s peak. During one stretch of the ride, he descends 150 m while accelerating from 35 km/hr to some 45 km/hr. What work was done by friction and air resistance during this descent?
A. 27.5 kJ
B. 70.0 kJ
C. 50.2 kJ
D. 23.9 kJ
E. 36.7 kJ
F. 40.3 kJ
A. 27.5 kJ
Physics & Space Science
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