A car is moving with a speed of $40$ km/hr. If the car engine generated 7 kilowatt power, then the resistive force in the path of the car will be:-

360 Netwon

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630 Newton

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Zero

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280 Newton

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Solution

The correct option is B 630 Newton
Power= Force $\times$ speed
$R = P o w e r / S p e e d$
Given, $P = 7 K w = 7000 W$
Speed= $40 k m / h = 11.11 m / s$
Resistance= $7000 / 11.11 = 630.063 N$

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A car is moving with a speed of 40 km/hr. If the car engine generated 7 kilowatt power, then the resistive force in the path of the car will be:-

The correct option is B 630 NewtonPower= Force × speedR=Power/SpeedGiven, P=7Kw=7000WSpeed= 40km/h=11.11m/sResistance= 7000/11.11=630.063N

A car is moving with a speed of $40$ km/hr. If the car engine generated 7 kilowatt power, then the resistive force in the path of the car will be:-

The correct option is B 630 Newton
Power= Force $\times$ speed
$R = P o w e r / S p e e d$
Given, $P = 7 K w = 7000 W$
Speed= $40 k m / h = 11.11 m / s$
Resistance= $7000 / 11.11 = 630.063 N$