Q11 of 46 Page 246

Selvi placed her purse on the passenger’s seat of her car when she drove to work.

By the time she reached her office, her purse had fallen on the floor in front of the passenger’s seat. Why did this happen? Explain.

According to Newton’s first law, objects tend to resist a change in their state of rest or state of motion. So whenever the brakes are applied, the car comes to rest but the purse tends to stay in its state of motion. So it resists the change and as a result, the purse keeps moving forward and so it falls on the floor in front of the passenger’s seat.


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The acceleration due to gravity on the surface of the earth will be maximum at ________ and minimum at _________

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If the radius of the earth is reduced to half of its present value, with no change in the mass, how will the acceleration due to gravity, be affected?

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Why does a fielder in the game of cricket pull his hands back when he catches a ball?

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From the following statements, choose that which is not applicable to the mass of an object

i) It is a fundamental quantity. ii) It is measured using physical balance.


iii) It is measured using spring balance.