A ball of mass 0.2 kg moving horizontally with a velocity of 5 m/s strikes another ball
of the same mass which is initially at rest and gets deflected by an angle 30o
. Its speed
is decreased to 3 m/s. Find the speed and direction of motion of the second ball after
collision. Determine the scattering angle of the first ball in C-frame of reference.
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now see
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Increase in popution is a demerits to the growth of country. Give two reasons to justify this statement.
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