Physics, 07.04.2020 19:01 bfgnnnbddf6830
Jeanette is playing in a 9-ball pool tournament. She will win ifshe sinks the 9-ball from the final rack, so she needs to line upher shot precisely. Both the cue ball and the 9-ball have massImage for Jeanette is playing in a 9 - ball pool tournament. She will win ifshe sinks the 9 - ball from the final rack, and the cue ball is hit at an initial speed of v_i. Jeanette carefully hits the cue ball into the9-ball off center, so that when the balls collide, they move awayfrom each other at the same angle theta from the direction in which the cue ball was originallytraveling (see figure). Furthermore, after the collision, the cueball moves away at speed v_f, while the 9-ball moves at speed v_9. View Figure
For the purposes of this problem, assume that the collision isperfectly elastic, neglect friction, and ignore the spinning of theballs. Find the angle theta that the 9-ball travels away from the horizontal.
Answers: 2
Physics, 22.06.2019 14:00, batmanmarie2004
Awater balloon launcher uses an elastic band with a spring constant of 115 n/m to use thee launcher you stretch thee band back with a balloon n it the water balloons have a mass of 1.3 kg a) if you stretch the band by 0.8 m, what elastic force will the band exert? b) with the band stretched 0.8 m, how much elastic potential energy is stored in the spring? c) if you release the band, it pushes forward. what is the kinetic energy of the balloon when it reaches the natural length of the band? d) what is the speed of the balloon when it reaches the natural length of the band?
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Physics, 22.06.2019 15:00, bagofmud8339
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Jeanette is playing in a 9-ball pool tournament. She will win ifshe sinks the 9-ball from the final...
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