Question

2) Sunita walks around a circular garden whose radius is 7 m.

a) Calculate the distance covered by her in one round.

b) Calculate the distance covered by her in two rounds.

c) Is distance a scalar or vector quantity. Give reason.


3) When a carpet is pulled up the dust remains on the floor.

Explain the statement using Newtons laws of motion.


4) Why is the stock of the gun made heavy?

Answer : Hint – Newton’s third law of motion.


5) A body at rest starts moving with a velocity of 25 m/sec when accelerated

after 5 sec. Calculate acceleration.

Distinguish between acceleration and velocity.


6) Action and reaction forces do not cancel each other. Explain. ​

Answer 1

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