A vehicle is moving on a horizontal road at a constant speed of t0 m/s. The engine needs to spend 5 k J energyper second. What is the force on the vehicle ?
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a
50 k N
b
5 k N
c
0.5 k N
d
0.05 k N
answer is C.
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Detailed Solution
P= Work done time = Force × distance time =F×V 5kW=F×10 or F=0.5kN