Arun & his friends were travelling in a car. The car suddenly stops due to engine failure. If Arun and his friends apply a force of 1000 N to drag the car to the nearest garage that is 1.2 km from that place in 20 minutes, determine the total power spent by them.

$2000 W$

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$3000 W$

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$1000 W$

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$500 W$

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Solution

The correct option is C
$1000 W$

Given, force $= 1000 N$

Displacement $= 1.2 k m = 1200 m$

Time taken $= 20$ minutes $= 1200 s$

Work done $=$ force $\times$ displacement $= 1000 \times 1200 = 12 \times 10^{5}$

Power $= \frac{Work done}{time}$
$= \frac{12 \times 10^{5}}{1200}$
$= 1000 W$

Therefore, total power spent by them is 1000 W.

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Arun & his friends were travelling in a car. The car suddenly stops due to engine failure. If Arun and his friends apply a force of 1000 N to drag the car to the nearest garage that is 1.2 km from that place in 20 minutes, determine the total power spent by them.

The correct option is C 1000 W Given, force =1000 N Displacement =1.2 km=1200 m Time taken =20 minutes =1200 s Work done = force × displacement =1000×1200=12×105 Power =Work donetime =12×1051200 =1000 W Therefore, total power spent by them is 1000 W.