Physics, 23.12.2019 19:31 2023greenlanden
An object is projected vertically upward from ground level. it rises to a maximum height h. if air resistance is negligible, which of the following must be true for the object when it is at a height h/2? 1. its speed is half its initial speed 2. its kinetic energy is half of its initial ke 3. its potential energy is half of its initial potential energy 4. itrs total mechanical energy is half of its initial value 5. its total mechanical energy is half of its value at the highest point
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