contestada

A ball tossed into the air rises to its maximum height and then falls back to the ground. Which is correct about the work done by gravity while the ball moves in the air?
O gravity does negative work while the ball moves upward and negative work while the ball moves downward.
O gravity does positive work while the ball moves upward and negative work while the ball moves downward.
O gravity does negative work while the ball moves upward and positive work while the ball moves downward.
O gravity does positive work while the ball moves upward and positive work while the ball moves downward.