You'll drop a ping pong ball and let it bounce up and down on the table....
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You'll drop a ping pong ball and let it bounce up and down on the table. For the bouncing ball, the system will be defined as the ball + planet Earth. We care about dropping the ball and how high up it bounces. Sketch the system, and identify the zero reference for height that you want to use. Draw the motion diagram for the ball + planet Earth system as the ball falls, then bounces back upwards. (Do you need to worry about the motion of the Earth?) Identify on the motion diagram the velocity for the initial point (right after the ball has been dropped) and for the final point (just as it reaches the highest point of the bounce). As the ball falls, does the gravitational potential energy increase, decrease or stay the same? As the ball falls, does the kinetic energy increase, decrease or stay the same? On the way up (after the bounce), does the potential energy increase, decrease or stay the same? On the way up (after the bounce), does the kinetic energy increase, decrease or stay the same? What is the kinetic energy at the moment of impact with the table? (Hint: is this a turning point?) What is the gravitational potential energy at the moment of impact with the table? (Hint: the table ton is the reference point) What is the kinetic energy at the moment of impact with the table? (Hint: is this a turning point?) What is the gravitational potential energy at the moment of impact with the table? (Hint: the table top is the reference point.) Draw the LOL diagram for the ball + Earth motion. The first L is for energies during the initial point of the motion. The O is for transfers of energy (by macroscopic forces doing work or microscopic interactions transferring energy through heat). The second L is for energies during the final point of the motion. SUBMIT ANSWER (A5) (LOL diagram and energy model equation): Eki Egi A Eth Egf Ef SUBMIT ANSWER (A6): (?) QUESTION 3: Will energy be conserved? (That is, does A Esys= 0?) Explain. SUBMIT ANSWER (A7): ? QUESTION 4: What is the energy lost in the first bounce? Use your energy model to find this energy (Q). You'll drop a ping pong ball and let it bounce up and down on the table. For the bouncing ball, the system will be defined as the ball + planet Earth. We care about dropping the ball and how high up it bounces. Sketch the system, and identify the zero reference for height that you want to use. Draw the motion diagram for the ball + planet Earth system as the ball falls, then bounces back upwards. (Do you need to worry about the motion of the Earth?) Identify on the motion diagram the velocity for the initial point (right after the ball has been dropped) and for the final point (just as it reaches the highest point of the bounce). As the ball falls, does the gravitational potential energy increase, decrease or stay the same? As the ball falls, does the kinetic energy increase, decrease or stay the same? On the way up (after the bounce), does the potential energy increase, decrease or stay the same? On the way up (after the bounce), does the kinetic energy increase, decrease or stay the same? What is the kinetic energy at the moment of impact with the table? (Hint: is this a turning point?) What is the gravitational potential energy at the moment of impact with the table? (Hint: the table ton is the reference point) What is the kinetic energy at the moment of impact with the table? (Hint: is this a turning point?) What is the gravitational potential energy at the moment of impact with the table? (Hint: the table top is the reference point.) Draw the LOL diagram for the ball + Earth motion. The first L is for energies during the initial point of the motion. The O is for transfers of energy (by macroscopic forces doing work or microscopic interactions transferring energy through heat). The second L is for energies during the final point of the motion. SUBMIT ANSWER (A5) (LOL diagram and energy model equation): Eki Egi A Eth Egf Ef SUBMIT ANSWER (A6): (?) QUESTION 3: Will energy be conserved? (That is, does A Esys= 0?) Explain. SUBMIT ANSWER (A7): ? QUESTION 4: What is the energy lost in the first bounce? Use your energy model to find this energy (Q).
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Related Book For
Understanding Business Statistics
ISBN: 978-1118145258
1st edition
Authors: Stacey Jones, Tim Bergquist, Ned Freed
Posted Date:
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