7. [-/10 Points] DETAILS SERPSE10 9.4.P.017.MI. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A tennis ball of mass 57.0 g is held just above a basketball of mass 617 g. With their centers vertically aligned, both balls are released from rest at the same time, to fall through a distance of 1.40 m, as shown in the figure below. (a) Find the magnitude of the downward velocity with which the basketball reaches the ground. m/s (b) Assume that an elastic collision with the ground instantaneously reverses the velocity of the basketball while the tennis ball is still moving down. Next, the two balls meet in an elastic collision. To what height does the tennis ball rebound? m Need Help? Read It Master It 8. [-/10 Points] DETAILS SERPSE10 9.4.OP.015.MI.SA. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER This question has several parts that must be completed sequentially. If you skip a part of the question, you will not receive any points for the skipped part, and you will not be able to come back to the skipped part. Tutorial Exercise A 14.5-g wad of sticky clay is hurled horizontally at a 95.0-g wooden block initially at rest on a horizontal surface. The clay sticks to the block. After impact, the block slides 7.50 m before coming to rest. If the coefficient of friction between block and surface is 0.650, what was the speed of the clay immediately before impact? Click here to begin! Need Help? Read It 9. [-/10 Points] DETAILS SERPSE10 9.4.OP.017. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Two blocks are free to slide along the frictionless wooden track shown below. The block of mass m, = 5.02 kg is released from the position shown, at height h = 5.00 m above the flat part of the track. Protruding from its front end is the north pole of a strong magnet, which repels the north pole of an identical magnet embedded in the back end of the block of mass my = 10.3 kg, initially at rest. The two blocks never touch. Calculate the maximum height to which m, rises after the elastic collision. m mz Need Help? Read It Watch It10. [-/10 Points] DETAILS SERPSE10 9.5.OP.019. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER An object of mass 2.90 kg, moving with an initial velocity of 5.09 i m/s, collides with and sticks to an object of mass 2.94 kg with an initial velocity of -3.65 j m/s. Find the final velocity of the composite object. J) - A i m/s Need Help? Read It Watch It 11. [-/10 Points] DETAILS SERPSE10 9.5.OP.020.MI.SA. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER This question has several parts that must be completed sequentially. If you skip a part of the question, you will not receive any points for the skipped part, and you will not be able to come back to the skipped part. Tutorial Exercise A billiard ball moving at 5.90 m/s strikes a stationary ball of the same mass. After the collision, the first ball moves at 5.16 m/s, at an angle of 0 = 29.0 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. Click here to begin! Need Help? Read It 12. [-/10 Points] DETAILS SERPSE10 9.5.OP.021.MI.SA. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER This question has several parts that must be completed sequentially. If you skip a part of the question, you will not receive any points for the skipped part, and you will not be able to come back to the skipped part. Tutorial Exercise An unstable atomic nucleus of mass 1.67 x 10"20 kg initially at rest disintegrates into three particles. One of the particles, of mass 5.19 x 10"27 kg, moves in the y direction with a speed of 6.00 x 10 m/s. Another particle, of mass 8.45 x 10 27 kg, moves in the x direction with a speed of 4.00 x 106 m/s. (a) Find the velocity of the third particle. (b) Find the total kinetic energy increase in the process. Click here to begin! Need Help? Read It 13. [-/10 Points] DETAILS SERPSE10 9.6.OP.023. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Four objects are situated along the y axis as follows: a 2.02-kg object is at +3.05 m, a 3.06-kg object is at +2.43 m, a 2.45-kg object is at the origin, and a 4.04-kg object is at -0.501 m. Where is the center of mass of these objects? X= m y = m Need Help? Read It Watch It