LAKHMIR SINGH & MANJIT KAUR-FORCE AND LAWS OF MOTION-Exercise
- To catch a fast cricket ball, a player pulls his hands backwards. Why ...
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- Why are car seat-belts designed to stretch somewhat in a collision ?
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- The troops (soldiers) equipped to be dropped by parachutes from an air...
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- Why would an aircraft be unable to fly on the moon ?
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- Explain why it is possible for a small animal to fall from a considera...
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- A boy of mass 50 kg running at 5 m/s jumps on to a 20 kg trolley trave...
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- A girl of mass 50 kg jumps out of a rowing boat of mass 300 kg on to t...
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- A truck of mass 500 kg moving at 4 m/s collides with another truck of ...
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- A ball X of mass 1 kg travellingg at 2 m/s has a head-on collision wit...
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- A heavy car A of mass 2000 kg travelling at 10 m/s has a head-on colli...
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- A man wearing a bullet-proof vest stands still on roller skates. The t...
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- Which of the following has more inertia ? (a) a rubber ball and a st...
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- In the following example,try to identify the number of times the veloc...
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- Explain why some of the leaves may get detached from a tree if we vigo...
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- Why do you fall in the forward direction when a moving bus brakes to a...
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- If action is always equal to the reaction, explain how a horse can pul...
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- Explain, why is it difficult for a fireman to hold a hose, which eject...
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- From a rifle of mass 4kg, a bullet of mass 50g is fired with an initia...
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- Two objects of masses 100g and 200g are moving along the same line in ...
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- An object experiences a net zero external unbalanced force. Is it poss...
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