Q3 of 49 Page 9

Explain why some of the leaves may get detached from a tree if we vigorously shake its branch.

The answer of this cause lies behind the Newton’s First Law of Motion. Initially, leaves and tree both are in rest. But when the tree is shaken vigorously, tree comes in motion while leaves have tendency to be in rest. Thus, because of remaining in the position of rest some of the leaves may get detached from a tree if we vigorously shake its branch.

More from this chapter

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1

A bullet of mass 10 g is fired horizontally with a velocity of 150 ms–1 from a pistol of mass 2 kg. Find the recoil of the pistol.

 2

Which of the following has more inertia?

(a) A rubber ball and a stone of the same size.


(b) A bicycle and a train.


(c) A five-rupee coin and a one-rupee coin.

 4

When a carpet is beaten with a stick, dust comes out of it. Explain.

 5

Define force. List any two effects of force.