Motion in a Gravitational Potential

PLEASE SHOW ALL WORK WITH CORRECT ANSWER!!! 8. 40 A rocket is projected upward from the earth's surface (r=Re) WITH AN INITIAL SPEED Vo that carries it to a distance r=1.5Re from the center of the earth. What is the launch speed Vo? Assume that air friction can be ignored and give your answer in terms of g and Re. Hint indicated: Potential energy is always neg. if the ref. level is zero at infinity.

Escape Speed

PLEASE SHOW ALL WORK WITH ANSWER!!!! 8.51 Show that the escape speed from the is square root 2 times a large as the orbital speed of an object in orbit just above the earths' surface.

Conservation of Momentum in Two-and Three Dimension Collision

PLEASE SHOW ALL WORK WITH CORRECT ANSWER!!! 7. 46 Two pendulums are hung adjacent to each other. Bob 1 has a mass m, and bob 2 has a mass 2m. Bob 1 is pulled aside until the support string makes an angle of 45 degrees with the vertical direction and then released. When the bobs bollide, the stick together. What is the maximum angle made by the support strings with respect to the vertical after the collision?

Linear Momentum

PLEASE SHOW ALL WORK WITH CORRECT ANSWER!!! A 9.72-g bullet is fired from a 30-30 rifle at a speed of 728 m/s into the 1.250 kg block of ballistic pendulum suspended by strings 3.9 m long. A.) through what vertical distance does the block rise? B.) how far does it swing horizontally? THE BOOK KEY IS SHOWING 1.61m FOR A.) AND 3.16m FOR B.) HOW DO I GET THESE ANSWERS.

Conservation of Momentum in 2 & 3 dimensional Collisions

PLEASE SHOW ALL WORK WITH ANSWER!!!! 7.49 A 7.2 kg bowling ball moving at 2.74 m/s strikes an identical ball that is originally at rest. After the collision the path of the intitially moving ball makes an angle of 27 degrees with respect to its original path. The path of the second ball makes an angle of -53 degrees with respect to the same direction. What is the speed of each ball immediately after the collision?