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[" 27.The dish of mass "10g" is kept "],...

[" 27.The dish of mass "10g" is kept "],[" horizontally in air by firing bullets "],[" of mass "5g" each at the rate of "],[10" per second.If the bullets "],[" rebound with the same speed,what "],[" is the velocity with which the bullets "],[" are fired? "],[" (a) "49m/sec],[" (b) "147cm/sec],[" (c) "98cm/sec],[" (d) "196cm/sec]

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[" A disc of mass "5kg" and kept "],[" floating horizontally in mid air "],[" by firing "10" bullets per second "],[" vertically up.If the mass of "],[" each bullet is "50gm" and bullets "],[" rebounded with same speed,"],[" the speed of each bullet is "],[m/" sec "(g=10m/sec^(2))]