Question

a gust of wind blowing east pushes against a ball. when will the wind do work on the ball? when the ball moves to the east when the ball moves to the north when the ball stays in one place when the ball moves north or south

Explanation:

Work is done when a force causes a displacement in the direction of the force. The wind is blowing east - ward. So, work will be done when the ball moves in the east direction as the force (from the wind) and the displacement of the ball will be in the same direction.

Answer:

when the ball moves to the east