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A ball is launched vertically from a marble launcher at 2.91 m/s. The ball has a mass of 3.28 kg. What is the potential energy of the ball at the top of its flight in Joules?
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31 votes
31 votes
A ball is launched vertically from a marble launcher at 2.91 m/s. The ball has a mass of 3.28 kg. What is the potential energy of the ball at the top of its flight in Joules?

User Voodoo
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1 Answer

21 votes
21 votes

Answer:

The potential energy at the top of the ball's flight is 13.88784 J. (round as you need)

Step-by-step explanation:

So the equation for potential energy is PE=mgh. We do not have height (h). However, we do have mass and velocity, which can be used to calculate the ball's maximum kinetic energy (KE=1/2mv^2). Because energy cannot be created or destroyed, the ball's maximum kinetic energy is equal to the ball's maximum potential energy. At the top of the ball's flight, it will have maximum potential energy.

User Zuallauz
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3.1k points
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