How Do Kinetic and Potential Energies Change During a Ball's Ascent?

AI Thread Summary
A 0.50 kg ball thrown upward has an initial kinetic energy of 80 J. To determine the kinetic and potential energy when the ball has traveled three-quarters of the distance to its maximum height, calculations must be performed based on energy conservation principles. The speed of the ball at this point can be derived from its kinetic energy. At maximum height, the potential energy can be calculated by considering the initial kinetic energy and the height reached. Understanding these energy transformations is crucial for solving the problem effectively.
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Homework Statement


a .50 kg ball thrown upward has an initial Kinetic energy of 80 J.


Homework Equations



(a)what are its kinetic and potential energy when it has traveled 3 quarters of the distance to its maximum height?
(b) speed at this point?
(c) potential energy at the maximum height (assume a reference is chosen to be zero at the launch point)?

The Attempt at a Solution


pls reply...i nid it badly...thnks...im working on it now..
 
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Please show your attempt.
 
i don't have an idea honestly
 
Start by finding the maximum height. What is the kinetic energy at the maximum height?
 
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In this question, I have a question. I am NOT trying to solve it, but it is just a conceptual question. Consider the point on the rod, which connects the string and the rod. My question: just before and after the collision, is ANGULAR momentum CONSERVED about this point? Lets call the point which connects the string and rod as P. Why am I asking this? : it is clear from the scenario that the point of concern, which connects the string and the rod, moves in a circular path due to the string...
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