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Pushing requires less force when pulling a block of ice at an angle above the horizontal. Positive work is done when a fishing boat pulls a net through the water, but negative work occurs when water resists the motion of the net.
When pulling a block of ice at an angle above the horizontal, pushing will require less force than pulling. This is because, in the case of pulling, part of the force is directed perpendicular to the motion, which doesn't help in moving the block.
Considering the situation where a fishing boat pulls a net through the water behind it, positive work is done because the force applied causes displacement in the direction of the net's motion.
However, when the water resists the motion of the net through it, negative work is done as the force opposes the direction of the motion.
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