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A car of mass 1000 kg accelerates unifor...

A car of mass 1000 kg accelerates uniformly from rest to a velocity of 15 m/s in 5 sec. The average power of the engine during this period in watts is :

A

2000 W

B

22500 W

C

5000 W

D

2250 W

Text Solution

Verified by Experts

The correct Answer is:
B
Power `= ("Work done")/("time")= ("Increase in K.E")/("time")`
`P= ((1)/(2)mv^(2))/(t)= ((1)/(2) xx 10^(3) xx (15)^(2))/(5)= 22500W`
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