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A ball of mass m1 experince a perfectly elastic collision with a stationary ball of mass m2. what fraction of the K.E does the striking the ball lose , if (i)It recoils at right angle to the original direction of motion and (ii) the collision is head on one
Dear student,
Consider the two balls of masses M and m, moving with velocities U and u (U > u). They both are moving in the same direction. They collide each other so that the velocities are V and v after collision, respectively.
Image of the elastic collision
The kinetic energy is conserved.
½ MU2 + ½ mu2 = ½ MV2 + ½ mv2 ….(1)
Now linear momentum s conserved.
MU + mu = MV + mv ….(2)
By solving these two equations we get the final velocities of the colliding bodies.
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