It is easier to roll a stone up a sloping road than to lift it vertically upwards. Why?

It is easier to roll a stone up a sloping road than to lift it vertically upwards because when rolling the stone up a sloping road, the force required is spread out over a longer distance. This means that the work done is distributed over a larger area, making it easier to move the stone. In contrast, when lifting the stone vertically upwards, all the force is concentrated in one direction, making it more difficult to lift the stone.

It is easier to roll a stone up a sloping road than to lift it vertically upwards because when the stone is rolled up a sloping road, the force of gravity is acting in the same direction as the direction of motion. This means that the force of gravity is helping to move the stone up the slope. Conversely, when the stone is lifted vertically upwards, the force of gravity is acting in the opposite direction to the direction of motion. This means that the force of gravity is acting against the movement of the stone, making it more difficult to lift it up.