Question

Work done by gravity when a object falling from max height in projectile

Answer 1

Answer:

The maximum height of the projectile depends on the initial velocity v, the launch angle θ, and the acceleration due to gravity. The unit of maximum height is meters (m). θ = angle of the initial velocity from the horizontal plane (radians or degrees).

Answer 2

Answer:

There’s a problem in the question because the work is being done as the projectile moves between two points, and you only tell us one of the them. However, if the maximum height it a distance L higher than the starting point, then the work done by gravity during the movement from starting point to maximum height is -mgL.

Note that negative sign. Gravity does negative work as the projectile moves up. Negative work slows down the projectile.