A28 A bullet of mass 0.020 kg is fired horizontally at 150 ms- at a wooden block of mass 2.0 kg resting on a smooth horizontal plane. The bullet passes through the block and emerges undeviated with a velocity of 90 ms . Calcu- late: - (a) the velocity acquired by the block. (b) the total kinetic energy before and after penetration and account for thcir differ- ence. (W, '91]

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A28 A bullet of mass 0.020 kg is fired horizontally
at 150 ms- at a wooden block of mass 2.0 kg
resting on a smooth horizontal plane. The
bullet passes through the block and emerges
undeviated with a velocity of 90 ms . Calcu-
late:
- (a) the velocity acquired by the block.
(b) the total kinetic energy before and after
penetration and account for thcir differ-
(W, '91]
ence.
Transcribed Image Text:A28 A bullet of mass 0.020 kg is fired horizontally at 150 ms- at a wooden block of mass 2.0 kg resting on a smooth horizontal plane. The bullet passes through the block and emerges undeviated with a velocity of 90 ms . Calcu- late: - (a) the velocity acquired by the block. (b) the total kinetic energy before and after penetration and account for thcir differ- (W, '91] ence.
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