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Q.

A car of mass 1250 kg is moving at a speed  of 30m/s. Its engine delivers power of 30kW while resistive force due to surface is 750 N.The maximum acceleration can be given to the car in ms-2 is

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a

13

b

14

c

15

d

16

answer is C.

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Detailed Solution

power =F xv=30kW F=30 x10330= 1000 N net force 1000-750 =250 N acceleration = 2501250=15
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