Physics, 28.01.2020 18:51 destiny465
When you play billiards, can you predict the velocities of the billiard balls after a collision if you know the velocity of a moving ball before the collision? assume the velocity of the first ball before the collision is v1i. the velocity of the second ball before the collision is zero. the balls have the same mass. a. find the velocity of the first ball after the collision. assume that the collision is head-on and elastic and that rotational motion can be ignored. express your answer in terms of v1i. b. find the velocity of the second ball after collision in terms of other velocities. express your answer in terms of v1i.
Answers: 1
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Acave rescue team lifts an injured spelunker directly upward and out of a sinkhole by means of a motor-driven cable. the lift is performed in three stages, each requiring a vertical distance of 11.0 m: (a) the initially stationary spelunker is accelerated to a speed of 4.80 m/s; (b) he is then lifted at the constant speed of 4.80 m/s; (c) finally he is decelerated to zero speed. how much work is done on the 78.0 kg rescue by the force lifting him during each stage
Answers: 2
When you play billiards, can you predict the velocities of the billiard balls after a collision if y...
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