a lorry has a mass of 5kg initial at rest after 10s its velocity becomes 20m/s.find the power of engine
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work done= force*displacement
displacement=velocity*time
=20*10=200m
force=mass*acceleration
5*20/10=10
therefore work done=2000
power=work/time=2000/10=200watts
displacement=velocity*time
=20*10=200m
force=mass*acceleration
5*20/10=10
therefore work done=2000
power=work/time=2000/10=200watts
Answered by
0
The answer is 100watt
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