A car having mass of 1500 kg is starting from stationary condition to obtain
the speed of 72 km/h in 5 sec. Then find the required engine force.
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Answer:
Momentum of car at speed 36km/h=10m/s=m×10
=1500×10
=15000kg m/s
Momentom of car at speed 72km/h=20m/s=m×20
=1500×20
=30000kg m/s
Momentom change=30000−15000=15000kg m/s
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