Work Energy And Power Question 191

Question: A car of mass 1250 kg is moving at 30m/s. Its engine delivers 30 kW while resistive force due to surface is 750N. What max acceleration can be given in the car [RPET 2000]

Options:

A) 13m/s2

B) 14m/s2

C) 15m/s2

D) 16m/s2

Show Answer

Answer:

Correct Answer: C

Solution:

Force produced by the engine

F=Pv=30×10330 =103N

Acceleration= Forward force by engine–resistive forcemass of car

=10007501250=2501250 = 15m/s2



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