Compute the kinetic energy that the rock

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Reference no: EM1360869

Q. A 1.9 kg rock initially at rest loses 401 J of potential energy while falling to the ground. Assume that air resistance is negligible.

Calculate the kinetic energy that the rock gains while falling.

Q. A hotel elevator ascends 190 m with a maximum speed of 4.0 m/s. Its acceleration and deceleration both have a magnitude of 1.4 m/s2.

How long does it take to make the complete trip from bottom to top?

Reference no: EM1360869

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