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Potential Energy - Kinetic Energy : a Short-Cut

physics.fisikastudycenter.com - Learning mechanical energy, the coservation of energy, the ratio of gravitational potential energy and kinetic energy will be discussed normally and the short-cut.

Problem
A ball falls from 20 m above the ground.


If the acceleration due to gravity g = 10 m/s2 and the ball starts from rest, find the ratio of gravitational potential energy and kinetic energy of the ball when it reaches a distance of 15 m from its initial position!

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12 shortcuts in physics mechanics - pulleys

physics.fisikastudycenter.com - 12 short-cut formulas for physics problems in mechanics with frictionless pulleys cases. These methods commonly used in multiple choices test or examination types not in an essay test type. Take a note that we have to be in exactly the same case with the each provided formula conditions to avoid any mistakes, if we don't, just leave it.

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