A solid metal ball and a hollow plastic ball of the same external radius are released from rest in a large vacuum chamber. When each has fallen 1 m they both have the same a, speed. b, momentum. c, kinetic

A solid metal ball and a hollow plastic ball of the same external radius are released from rest in a large vacuum chamber. When each has fallen 1 m they both have the same

a, speed.
b, momentum.
c, kinetic energy.
d, inertia.
e, change in potential energy.

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