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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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A
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ALLEN -CENTRE OF MASS-EXERCISE-I
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  7. A small bucket of mass M kg is attached to a long inextensible cord of...

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  9. A ball of mass 2m impinges directly on a ball of mass m, which is at r...

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  10. A body of mass 2 kg is projected upward from the surface of the ground...

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  11. A ball of mass 1 kg strikes a heavy platform, eleastically, moving upw...

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  12. Two paricles of equal mass m go round a circle of radius R under the a...

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  13. Two objects move in the same direction in a straight line. One moves w...

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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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  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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