The tennis ball is fly though the air. It could continue flying though the air but the tennis player is blocking it with the tennis racket and and making it go a different direction then it was before.
The boy in the purple will stop the ball with his foot forcing the ball to stop, the ball stopped because the foot was an different object that was in the soccer ball's path.
The dogs are each pulling on the stick, the bigger dog is pulling to left and the smaller dog is the right. The bigger dog will got the stick because that dog is pulling with more force than the smaller dog.
The two girls are pulling on the blanket with the same amount of force, and so neither of them will got the blanket
The boy is throwing a ball the garage. When the ball hits the garage door it bounces off of it. The ball hitting the garage door is a action and it bouncing off of it is a reaction.
The dude dropped the ball on the ground. Then the ball hits the ground and the force of the ball pushes against the floor, and bounces from the reaction from the ball hitting the floor.