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A car of mass 1000kg accelerates uniform...

A car of mass 1000kg accelerates uniformly from rest to a velocity of `54km//h` in 5 seconds. Calculate (i) its acceleration (ii) its gain in KE (iii) average power of the engine during this period.

A

2000 W

B

22500 W

C

5000 W

D

2250 W

Text Solution

Verified by Experts

The correct Answer is:
B
m = 1000 kg v = 54 km/h = 15 m/s
Average power
` P_(av) = W/t = (DeltaK.E)/t = ((1/2(1000)(15)^(2))/5)`
= 22500 W
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