If the potential energy of a ball held 20 m above the ground is 30 J, what is the total energy of the ball (PE + KE) after it has been dropped and is 5 m from impact?
Added by Brendan E.
Step 1
Step 1: Initially, the total energy of the ball at 20 m above the ground is equal to the potential energy, since the kinetic energy is zero. Show more…
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