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Posted by on Thursday, January 19, 2012 at 9:07pm.

A ball has a potential energy of 180 J and a kinetic energy of 0 J. After falling 2m, it has a potential energy of 135J. What is its kinetic energy at this point?

PLEASE ANSWER THIS I'M STUCK!

  • Science - , Monday, June 4, 2012 at 10:57pm

    Assuming energy is conserved, gravitational potential energy and kinetic energy 'swap' during a fall, and the numeric values transfer. I would say the answer is 180 - 135 = 45J
    Kinetic energy = 45J

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