A small dog is trained to jump straight up a distance of 1.2 m. How much kinetic energy does the 7.2 kg dog need to jump this high? (The acceleration due to gravity is 9.8 /s2.) Show your work for credit.
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According to your question, there should be potential energy instead of kinetic energy.
According to potential energy the answer is like below:-
potential energy=mass×gravity×height.
=mgh.
=7.2×9.8×1.2
=84.672kgm^2/sec^2.
HOPE IT HELPS................
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