Question

Se tira una bola verticalmente hacia arriba, la magnitud de la aceleracion de la bola, en cada uno de los siguientes instantes es major que g, de la misma magnitud que g, menos qje g o cero? Explique. a) justo despues de salir de sus manos b) en su altura máxima c) antes de tocar el suelo

You throw a ball vertically upwards, the magnitude of the acceleration of the ball, in each of the following moments is greater than g, of the same magnitude as g, less than g or zero? Explain a) Just after leaving your hands b) At your maximum height c) Before touching the ground.

Answer 1

If we do not consider air resistance, then the value of acceleration will be equal to acceleration due to gravity for all the 3 cases.

But if we consider air resistance,

a) acceleration magnitude is greater than g. This is because air resistance opposes the upward motion and acts in the same direction as g.

b) acceleration magnitude is same as g. This is because speed is zero and effect of air resistance is zero.

c) acceleration magnitude is less than g. This is because air resistance acts upwards opposite to the acceleration due to gravity.