HW-_2D_momentum_HONORS

# The cue ball hits the eight ball at a 20 o angle and

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makes an elastic collision with the eight ball, which is initially at rest. The cue ball hits the eight ball at a 20 o angle and the eight ball leaves at a 30 o with a velocity of 2m/s. Find the speed and direction of the cue ball immediately after the collision. Assume that the balls have equal mass . 3.05 m/s, 346.56 o 4) A red ball traveling at 4m/s at an angle of 20° above horizontal collides elastically with a green ball, with twice the mass of the red ball, traveling at 3m/s at an angle of 35° below horizontal. After the collision, the red ball is traveling at angle of 10° below horizontal and the green ball is traveling at an angle of 5° above the horizontal. Assume both balls are traveling in the positive x direction the whole time. What is the final velocity of each ball?

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1) Two hockey pucks collide on a horizontal, frictionless surface. The velocities of both pucks before the collision are shown in the drawing. After they collide, puck A is moving as shown. Assume that the mass of puck A is twice as large as the mass of puck B: M A = 2M B . a) Find the magnitude and direction of the velocity of puck B after the collision. 40.48m/s, 331.26 o b) Is kinetic energy conserved in this collision? Use 1kg for “M”.
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