Question

a 10kg ball A moving at speed of 8m/s collides with a 20kg ball initially at rest. after collision the balls A and B move along direction making an angle of 30 and 45 respectively with the initial direction of motion of A. find the final speeds of the balls A and B

Answer 1

Let assum that the ball be M and before collision net momentum along with X axis is 9m and in the Y axis is 0 .

here velocities of the ball V1 and V2. Hence the V1+ V2=9/(cos 30)=10.39, then assume that V1 = V2 by using the equation , you have to solve 5.2 m/s .

Answer 2

5.2m/s........@nswer..!!