What is the rebound height of a ball?

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SUMMARY

The discussion centers on calculating the rebound height of a ball given its initial upward velocity (v), mass (m), and a coefficient of restitution of 0.6, with gravity approximated at 10 m/s². Participants emphasize the need for clarity regarding the conditions of the bounce, as well as the definition of "efficiency" in this context. It is established that using equations of motion or energy conservation principles can yield the rebound height if the initial conditions are properly defined.

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  • Understanding of basic physics concepts such as velocity and gravity
  • Familiarity with the coefficient of restitution in elastic collisions
  • Knowledge of equations of motion in classical mechanics
  • Basic principles of energy conservation in physics
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If I have the velocity an object is moving up (lets make it v here), and the mass (m), how do I calculate the height it bounces to, and by using the efficiency of the ball 60% and gravity as 10 (for simplicity), how do i calculate the original height? Assume there is no wind resistance.
 
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Hi, Radio.
Is this a homework question? If so, it's in the wrong section. Anyhow, there is not enough information given to solve the problem. For one thing, how do you expect a ball that's already moving upward to "bounce"? Off of the ceiling? Off of a wall? Off of a tennis racquet? What do you mean by the "efficiency" of the ball? Gravity is 10 what? That's not even a form in which gravity can be expressed (unless you mean 10xEarth gravity).
 
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what is a suitable hypothesis for the height of rebound of a tennis ball
 
Need more information to solve. I assume coefficient of restitution is 0.6. I also don't understand gravity is 10.
 
mechpeac said:
Need more information to solve. I assume coefficient of restitution is 0.6. I also don't understand gravity is 10.
10 ms-2? If you assume velocity is v at h=0 there is enough information to calculate height using either equations of motion or energy conservation.
 

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