Q The velocities of two steel balls before impact are shown If after head on impact the velocity - Physics - System Of Particles And Rotational Motion

Question

Q The velocities of two steel balls before impact are shown If
after head on impact the velocity of ball B is observed to be 3 m/s
to the right, the coefficient of restitution is-

Chandra Prakash · Accepted Answer

dear student
apply conservation of momentum before and after the
collisioninitial momentum = m1u1+m2u2here m1=0
6 m2 = 0
4 u1=4 u2=-2 initial momentum = 0
6*4-0 4*2 =1
6 final velocity of mass b = 3m/s final momentum = 0
4*3+0
6*v2 as initial momentm = final momentum 1
6=1 2+ 
6v2 which gives v2= 2/3as e=velocity of separationvelocity of approch =3-2/36=7/18 answer

Q. The velocities of two steel balls before impact are shown. If after head on impact the velocity of ball B is observed to be 3 m/s to the right, the coefficient of restitution is-