Required information In 1899 Charles M. "Mile a Minute" Murphy set a record for speed on a bicycle by pedaling for a mile at an average of $$ 62.3 $$ mi/h ( $$ 27.8 m / s $$ ) on a track of planks set over railroad ties in the draft of a Long Island Railroad train. In $$ 1985 $$ , a record was set for this type of "motor pacing" by Olympic cyclist John Howard who pedaled at $$ 152.2 mi / h ( 68.04 m / s $$ ) in the wake of a race car at Bonneville Salt Flats. The race car had a modified tail assembly designed to reduce the air drag on the cyclist. Assume that the mass of bicycle plus rider is $$ 71.8 kg $$ in each case. What was the kinetic energy of Howard and his bicycle? $$\square $$ kJ

Question

Required information In 1899 Charles M. "Mile a Minute" Murphy set a record for speed on a bicycle by pedaling for a mile at an average of $$ 62.3 $$ mi/h ( $$ 27.8 m / s $$ ) on a track of planks set over railroad ties in the draft of a Long Island Railroad train. In $$ 1985 $$ , a record was set for this type of "motor pacing" by Olympic cyclist John Howard who pedaled at $$ 152.2 mi / h ( 68.04 m / s $$ ) in the wake of a race car at Bonneville Salt Flats. The race car had a modified tail assembly designed to reduce the air drag on the cyclist. Assume that the mass of bicycle plus rider is $$ 71.8 kg $$ in each case.  What was the kinetic energy of Howard and his bicycle? $$\square $$ kJ

Greene Peters · Accepted Answer

the kinetic energy of John Howard and his bicycle was approximately 166.13 kJ

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