Question

Explain why it is easier to push a lighter box than the heavier box on the same floor

Answer 1

The lighter box is easier to push since the friction of an object is proportional to the mass of the object and thus lighter the object lesser the friction.

Answer 2

that is because of newton's second law of motion...acceleration is inversely proportional to the mass of the object and we need to apply more force when the object is heavy.