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Two friends are sitting in a stationary ...

Two friends are sitting in a stationary boat. At `t = 30s` the person at the fromt tosses a sack to the person in the rear, who catches the sack `0.2 s` later. Which plot in figure shows the velocity of the boat as a fuction of time ? Positive velocity is forward, negative velocity is backward. Neglet any drag force on the boat from the water :-

A

B

C

D

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The correct Answer is:
A
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ALLEN-CENTRE OF MASS-EXERCISE-I
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  11. A ball of mass 1 kg strink a heavy platform, elastically, moving upwar...

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  14. A uniform rope of linear mass density lambda and length l is coiled on...

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  15. A 10 g rubber ball and a 10g clay ball are each thrown at a wall with ...

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  16. Two friends are sitting in a stationary boat. At t = 30s the person at...

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  17. Two blocks, with masses m(1) 2.5 kg and m(2) = 14 kg, approach each ot...

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  18. A small puck is sliding to the right with momentum vec(P)(1) on a hori...

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  19. A smooth sphere is moving on a horizontal surface with velocity vector...

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  20. A moving 2 kg ball with a speed of 2 ms^(-1) hits obliquely a stationa...

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