Bonus: How much energy did the bat transmit to the ball?

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The discussion focuses on calculating the energy transmitted from a bat to a ball, emphasizing that the energy can be positive if the bat gives energy to the ball or negative if it absorbs energy. Participants express confusion about the appropriate equations to use, particularly referencing kinetic energy (Ek=1/2mv^2) but lacking clarity on its application in this context. There is a suggestion that the problem may involve work done, as the energy is measured in joules. The scenario involves a ball arriving at a certain velocity and leaving in the opposite direction with a different velocity. Understanding the relationship between the bat's impact and the ball's kinetic energy is crucial for solving the problem.
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Homework Statement


Bonus: How much energy did the bat transmit to the ball? (Note: if the bat gave energy to the ball, then this is a positive number. If the bat absorbed energy from the ball, then this is a negative number.)


Homework Equations


I have absolutely no idea... Ek=1/2mv^2?



The Attempt at a Solution


I still have absolutely no idea. Is there actually an equation I can use for this?? My physics teacher hasn't actually taught us how to do these problems althought we are currently on kinetic energy. Since the answer is in joules, does it have to do with the amount of work?
 
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I think there is some more to the question.
Presumably a ball arrived at some velocity and left back in the opposite direction with another velcity
 

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