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match these vocabulary words with their definitions.

An athlete is holding 24 lb of weights at a height of 6 inches above the stack as shown. to lower the weights, she applies a constant force of 5 lb to the handle. determine the velocity of the weights immediately before they hit the stack.

Metals are good conductors of electricity because they

Relative to the ground below, how many joules of potential energy does a 1000-kg boulder have at the top of a 5-m ledge?