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CBSE Class 9 Answered

A 150 kg engine develops 500w/kg.What force does it exert in moving a car at the speed of 20m/s.
Asked by | 23 Dec, 2011, 08:31: PM
Expert Answer
Power = 500 x 150 = 75000 W
P = F x v
F = P/v
   = 75000/20 = 3750 N
Answered by | 25 Dec, 2011, 10:46: PM
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