Answer
(a) On the ground, the two forces acting on the player are the weight which points straight down, and the normal force which points straight up. Note that the green box represents the player.
(b) In the air, the only force acting on the player is the weight which points straight down. Note that the green box represents the player.
Work Step by Step
(a) On the ground, the two forces acting on the player are the weight which points straight down, and the normal force which points straight up. Note that the green box represents the player.
(b) In the air, the only force acting on the player is the weight which points straight down. Note that the green box represents the player.