A stone is thrown up with a velocity of 70 m/s from the ground. While coming down, it strikes a glass pan, held at half the height through which it has risen, and loses half of its velocity in breaking the glass. Determine the time taken to reach the maximum height and the velocity with which it will strike the ground and the total time is taken to reach the ground     Solution 1. The time taken to reach maximum height in seconds is Answer for part 1 2.The maximum height reached in m is Answer for part 2 3.The distance between glass pan to the maximum height in m is Answer for part 3 4.The velocity when the stone hits the glass pan in m/s is Answer for part 4 5.The velocity of the stone when it  hits the ground in m/s  is  Answer for part 5 6.The total time taken by the stone in seconds is

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Conservation of Energy

In physics, the rule of the conservation of energy states that energy doesn’t disappear from the atmosphere; instead, it changes its form from one type to another. Energy is one of the most important physical quantities in nature, and it cannot be created or destroyed — only transformed.