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Name three different units of energy used to measure heat and describe what type of situations each is usually used.

Arunner is training for an upcoming marathon by running around a 100-m-diameter circular track at constant speed. let a coordinate system have its origin at the center of the circle with the x-axis pointing east and the y-axis north. the runner starts at (x, y) = (50 m, 0 m) and runs 2.5 times around the track in a clockwise direction.

Where is the potential energy throughout the loading, cocking, and releasing of the trebuchet?