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Sir plz make me understand all the concepts being applied here
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Asked by vishakhachandan026 | 30 May, 2019, 10:15: AM
answered-by-expert Expert Answer
When the packet is in train A, the momentum of it is more than the packet in train B. When the packets are exchanged from A to B and vice versa, as the packet in train A have higher momentum, the train B will get accelearted and as the packet in train B has lower momentum, after exchange the train A will be decelerated. 
Thus,
correct option is (A) - Train A will be retarted and B will be accelerated 
Answered by Shiwani Sawant | 30 May, 2019, 12:09: PM
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JEE main - Physics
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JEE main - Physics
a force of 23N and another force of 19N act on a mass of 50kg in mutually perpendicular directions. the resulting magnitude of the acceleration produced by these force is?
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In the arrangement shown pullies and strings are ideal. The acceleration of block B is 
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JEE main - Physics
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the force of buoyancy exerted by the atmosphere on a balloon is B in upward direction and remains constant . the force of air resistance on the balloon acts opposite tom the direction of velocity and is proportional to it .The balloon carries a mass M and is found to fall down near the earths surface with a constant velocity v . How much mass should be removed from the balloon so that it may rise with a constant velocity  v ?
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JEE main - Physics
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Kindly answer the question in the attached picture
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Asked by maps.stuti | 03 Jan, 2022, 08:19: AM
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