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Finding the Total mechanical energy

  1. Aug 9, 2014 #1
    At the moment when a shot putter releases a 5.00 kg shot, the shot is 2.00 m above the ground and traveling at 15.0 m/s. It reaches a maximum height of 8.00 m above the ground and then falls to the ground. Assume that air resistance is negligible.

    a. What was the potential energy of the shot as it left the hand, relative to the ground?
    b. What was the kinetic energy of the shot as it left the hand?
    c. What was the total mechanical energy of the shot as it left the hand?
    d. What was the total mechanical energy of the shot as it reached its maximum height?
    e. What was the potential energy of the shot at its maximum height?
    f. What was the kinetic energy of the shot at its maximum height?
    g. What was the kinetic energy of the shot just as it struck the ground?

    I've got the answers up until question c). But I've been stuck on d) I know the answer is 661 J but I don't know how








    3. The attempt at a solution
     
  2. jcsd
  3. Aug 9, 2014 #2

    billy_joule

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    Science Advisor

    sum answers e and f to get d
     
  4. Aug 9, 2014 #3
    Thanks got it!
     
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