PHYS 1501Q Lecture Notes - Lecture 44: Projectile Motion, International System Of Units, Angular Velocity
6 Dec 2018
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PHYS 1501Q Lecture Notes - Lecture 44: Projectile Motion, International System Of Units, Angular Velocity
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Document Summary
Physics 1501q - lecture 44 - final exam review . Practice exam questions: a simple pendulum of length l = 10m is released at an angle = 20 relative to the vertical. The pendulum bob collides elastically with an identical ball when it reaches its lowest point and stops after the collision (kinetic energy is conserved). The ball, which was initially at rest, undergoes projectile motion with an initial horizontal velocity v b , as shown in the figure. 2 v = h = l - lcos v = 0 = h - 0. 5gt 2 t = x = 3. 44t = 3. 44(1. 75) = 6m: a girl is standing on a train that is moving toward west at 30 mph. What is the ratio of the final to the initial kinetic energy of box a: v ag = v at + v tg. V ag = 35 - 30 = 5 mph toward east: conservation of momentum.
