Question

If you throw an apple towards the sky why its going up in spite of gravitational pull? .
Hint : (Answer the question based on the concept of net force?)

Answer 1

Upward force

Explanation:

So before I come to my conclusion, I would like to specify a little about net force. Net force is the sum of all forces acting upon the body and has no separate existence of its own, unlike the real forces acting on the object, i.e. it is not an additional force. While the net force on an object is zero, its speed and direction of motion remain unchanged.

*General explanation of the question* - (When the apple is thrown upwards, it is thrown at a greater force than that of the gravitational force which is pulling downwards. As the apple is going upwards the impact of the initial force (force that you applied while throwing) decreases and then comes a point when the upward force is less than gravity and this the apple falls down.)

So, the upward force exerted by the air on the apple falling down or moving up is equal to the weight of the air displaced by that apple. Take the net downward acceleration. Subtract it from acceleration due to gravity(g) (9.8 m/s^2). The difference is the upward force on the object generated by air resistance.

I don't know if this helps but I'll be happy if it really helps you