physics

A stone is thrown vertically upwards, reaches a highest point, and returns to the ground. When the stone is at the top of its path, its acceleration

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  1. Now Alex, enough already, draw picture with all forces.
    There is one, the weight
    F = - m g
    so
    F = m a = - m g
    so
    a = -g

    THE WHOLE TIME, NOT JUST AT TOP

    Now no more questions until you try yourself !!!!

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