Questions
A body P of mass 2m moving with velocity u collides head-on with a stationary body Q of mass m. After the collision, the bodies coalesce. Then percentage loss of energy of P in the process is
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a
24.42%
b
55.55%
c
40.58%
d
62.18%
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Correct option is B
Conserving momentum, (2m+m)V=2m.u⇒V=2u3Energy lost =12.2m.u2−12.2m.V212.2m.u2×100%=55.55%Similar Questions
which of the following is not a perfectly inelastic collision ?
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