a car of mass 1000 kg is starting from the rest and mo ing with a uniform acceleration covers a distance of 20 m in 25s. calculate the work done by the engine of the car during this time
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Answer:
W=F×s
W=ma×(ut+
2
1
at
2
)
=(1000×2)×(0×5+
2
1
×2×5
2
)
=2000×25
=100kJ
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