Q.

A particle A of mass 107 kg is moving in the positive direction of X.  Its initial position is x=0 and initial velocity is 1m/sec.  The velocity at x = 10m is …..

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a

4 m/sec

b

2 m/sec

c

32  m/sec

d

1003 m/sec

answer is A.

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Detailed Solution

Area of the graph = ∫pdx=area of the trapezium =  124+2×10=30∫pdx=30∫Fvdx=30∫mdvdtvdx=30∫mdv.vdxdt=30∫mv2dv=30mv331u=30u=4m/s
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A particle A of mass 107 kg is moving in the positive direction of X.  Its initial position is x=0 and initial velocity is 1m/sec.  The velocity at x = 10m is …..