We have a disk that is 1.49 kg and is traveling at 3.18 m/s to the right. It hits the end of a stick with a mass of 1.61 kg and an overall length of 3.2 m. The stick was originally oriented so that its long axis was perpendicular to the path of the disk, but it rotates after the collision. However, the disk continues moving along the same path after the collision. Assume that the collision is perfectly elastic, there is no friction, and the disk has an insignificant width. 1. Find the speed of the disk after collision. 2. Find the angular speed of the stick after collision.

A 17 kg body is moving through space in the positive direction of an x axis with a speed of 140 m/s when, due to an internal explosion, it breaks into three parts. One part, with a mass of 9.5 kg, moves away from the point of explosion with a speed of 77 m/s in the positive y direction. A second part, with a mass of 2.5 kg, moves in the negative x direction with a speed of 460 m/s. What are the (a) x- component and (b) y-component of the velocity of the third part? (c) How much energy is released in the explosion? Ignore effects due to the gravitational force. (a) Number i 353 (b) Number -73.15 (c) Number i 5.5331 Units Units Units m/s m/s J

A puck with a mass mp=0.31 kg has an initial speed of vpi=9.26 ms at an angle of thetha =30.6 with respect to the x axis. The puck hits a stick with a mass ms=0.55 kg which is initially at rest as indicated in the figure. The puck leaves with a speed of vpf=3.61 ms at an angle phi=39.7 with respect to the y axis. The collision occurs on ice, so friction can be neglected during the collision. Find the x component of the final velocity of the center of mass of the stick. Find the y component of the final velocity of the center of mass of the stick.

A billiard ball is moving in the x-direction at 30.0 cm/s and strikes another billiard ball moving in the y-direction at 40.0 cm/s. As a result of the collision, the first ball moves at 50.0 cm/s, and the second ball stops. What is the change in kinetic energy of the system as a result of the collision?