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of the objects is hollow and the other one is solid and (ii) both of them are hollow,
size remaining the same in each case? Give reason.
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10. A ball is thrown vertically upwards with a velocity of 20 ms from the top of a
multistoried building. The height of the point from where the ball is thrown is 25 m
from the ground, (i) How high will the ball rise? (ii) How long will it ‘be before the
ball hits the ground?
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