12. [-/2 Points] DETAILS SERPSE10 9.5.OP.019. 0/6 Submissions Used MY NOTES ASK YOUR TEACHER An object of mass 3.08 kg, moving with an initial velocity of 5.06 i m/s, collides with and sticks to an object of mass 2.08 kg with an initial velocity of -3.25 j m/s. Find the final velocity of the composite object. = 4 i + i m/s Need Help? Read It Watch It 13. [-/2 Points] DETAILS SERPSE10 9.5.OP.020.MI. 0/6 Submissions Used MY NOTES ASK YOUR TEACHER A billiard ball moving at 5.80 m/s strikes a stationary ball of the same mass. After the collision, the first ball moves at 4.81 m/s at an angle of 34.0 with respect to the original line of motion. Assuming an elastic collision (and ignoring friction and rotational motion), find the struck ball's velocity after the collision. magnitude m/s direction . (with respect to the original line of motion) Need Help? Read It Master It 14. [-/3 Points] DETAILS SERPSE10 9.5.OP.021.MI. 0/6 Submissions Used MY NOTES ASK YOUR TEACHER An unstable atomic nucleus of mass 1.50 x 10-20 kg initially at rest disintegrates into three particles. One of the particles, of mass 5.14 x 10-2/ kg, moves in the y direction with a speed of 6.00 x 10 m/s. Another particle, of mass 8.46 x 10-2 kg, moves in the x direction with a speed of 4.00 x 106 m/s. (a) Find the velocity of the third particle. i + j ) m/s (b) Find the total kinetic energy increase in the process. Need Help? Read It Master It