Question

A diver jumps off a dving board and does a twisting manuever. In the midst of his jump in the air, the diver cannot change his
a. Rotational Energy
b. Rotational Speed
c. Rotational Inertia
d. Angular momentum

I say d just want to make sure
Correct.

To see if you really understand this, explain why answer a) is incorrect despite the fact that energy is conserved.

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