Science Quiz 58 - Switched on kids

Science Quiz 58

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A bomb travelling in a parabolic path under the effect of gravity, explodes in mid air. The centre of mass of fragments will:

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Fast neutrons can easily be slow down by

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If the KE of a body becomes four times of its initial value, then the new momentum will be more than its initial momentum by?

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The centre of mass of a body:

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If a ball is thrown upwards from the surface of earth:

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A bullet in motion hits and gets embedded in a solid block resting on a frictionless table. What is conserved?

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A body is hanging from a rigid support by an inextensible string of length ‘l’ . It is struck inelastically by an identical body of mass m with horizontal velocity v = √(2gL) , the tension in the string increases just after the striking by ?

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A massive ball moving with speed v collides with a tiny ball having a mass very much smaller than the mass of the first ball. If the collision is elastic, then immediately after the impact, the second ball will move with a speed approximately equal to:

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Science Quiz 58
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