A girl throws a ball with a horizontal velocity of 2.4 m/s from the height of 0.90 m. If the coefficient of restitution of the ball and the ground is 0.80, determine the following: a. vertical velocity after it rebounds from the ground. b. resultant velocity after it rebounds from the ground. c. Maximum height the ball will reach after the first rebound

The cue ball A is given an initial velocity (VA)₁ = 5 m/s. If it - makes a direct collision with ball B (e = 0.73) determine the angle just after ball B rebounds from the cushion at C (e' = 0.6). Each ball has a mass of 0.4 kg. Neglect the size of each ball. Give your answer in degrees with one decimal place of precision. (VA)₁ = 5 m/s B 30°

An object of mass 3M, moving in the +x direction at speed Up. breaks into two pieces of mass M and 2M as shown in V, = ? 2M the figure. 3M If 0, = 65.0" and 0, = 25.0. determine the final velocities v %3D and vz of the resulting pieces in terms of tg. 1.1 Incorrect 1.49 Incorrect

In some collisions, the duration of the collision (At) is long while in some others it is short. According to the desired result at the end of the collision, the time of collision becomes longer or shorter. Which of the following situations differs from the others according to the lengthening and shortening the collision time interval? 8 - a) O Footballers make gentle controls on their feet to keep the fast ball coming to them. b) O The woodpecker strikes a tree with its hard and sharp beak. c) O Design of vehicle bumpers as shock absorbing. d) O When we jump down from a high place, we fall to the ground by bending our knees slightly. e) O Installation of airbags in the driver and passenger consoles in the vehicle.