Decide the speed with the rock is thrown

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Reference no: EM133628

Question1

A rock is thrown from edge of the top of a 100-ft tall building at some unknown angle above the horizontal. The rock strikes ground a horizontal distance of 160 ft from the base of the building 5.0 s after being thrown. Suppose that the ground is level and that the side of the building is vertical. Decide the speed with which the rock was thrown.

Question2

A 14.0-kg box is being pushed from bottom to the top of a frictionless ramp. When the box is pushed at a constant velocity, non conservative pushing force does 58.0 J of work. How much work is done by pushing force when the box starts from rest at a bottom and reaches the top of same ramp with a speed of 1.50 m/s?

Reference no: EM133628

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