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sidharth kumar kumar Grade: 11
        

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

6 years ago

Answers : (1)

SAGAR SINGH - IIT DELHI
879 Points
										

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.


 Elastic Colllision


                                                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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Sagar Singh


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6 years ago
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