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4. If two balls of same masses are dropped on sand,the depths of penetration is same if1. Heavier ball is dropped faster than lighter ball11. Lighter ball is dropped faster than heavier ballIII. The product 'my' is same for both bodiesIV. None of these7. A fielder giving a swing while catching a ball is anexample of1. Inertia11. MomentumIII. Newton's Il law of motionIV. Newton's I law of motion8. Action and reaction forces1. Act on the same bodyII. Act on different bodiesIII. Act in same directionIV. Both I and III |
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Answer» Answer: 4.None of these 7.Inertia 8.Act on different bodies Explanation: 4.This was already EXPLAINED by Galileo from his experiment 7.A fielder gives a SWING while catching a ball because he experience a smaller force for a LONGER interval of time THUS resulting a lesser impulse on his hands 8.Newton's third law states " for every action, there is an equal and opposite reaction.They ALWAYS act on two different bodies" |
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