Tell him Gravity attracts things to the EARTH not to the up. Gravity is from the earth. That is why you have to put up more energy to lift up a heavy material up the ground and in so doing, you're trying to overcome the earth's attraction of such object. The heavier the object the more the earth attracts it under gravitational force and the greater the force needed to overcome the gravitational pull.. The lighter an object, the less attraction e.g. Balloons (supported by a force from the air or wind) can go up against gravity.
Yusra.Nimoo
