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At what height above the ground must a body of mass 20kg be situated in order to have potential energy equal in value to the Kinetic energy possessed by another body of mass 20kg moving with a velocity
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27 votes
27 votes
At what height above the ground must a body of mass 20kg be situated in order to have potential energy equal in value to the Kinetic energy possessed by another body of mass 20kg moving with a velocity of 10m/s? (Take g = 10m/s?)​

User Max McKinney
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1 Answer

28 votes
28 votes

Answer:


Assuming the height of the first body is h and the speed of the second one is v, just equate the PE of the first with the KE of the second:

mgh = (1/2) mv^2

since they have equal mass, it cancels out and you can solve for h.

Step-by-step explanation:

User Farnsy
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