Sorry if this question's been asked. I looked through some of the questions but didn't find a similar enough question.
My question on Newton's Third Law: It's my understanding that if you were in outer space and you threw a tennis ball then both you and the tennis ball would move but in opposite directions. Because you exert a force on the ball and it exerts an equal force on you. So how come when you push a wall on earth you get pushed back but not when you throw a ball. Can't you throw a ball with the same force you pushed the wall- if that's the case how come you don't move back? It's putting a force on you equal to the wall's force, right?
I do appreciate all the answers I've got but I guess I'm still confused. I understand that the ground pushes me in opposition to the wall's direction of force when the wall pushes my body, therefore my feet, on the ground away from the wall. But how come your arm and consequently your torso moves back when pushing a wall but not when throwing a ball.