Now that we moved the goal, let's start shooting.
This is the size 3 ball. Kick it as hard as you can with your right foot.
Nice shot, you kicked it really hard. Next up is the size 4 ball, kick it exactly as hard as you kicked this one.
Now that both players are pushing the goal, they are using a greater force and now the force is actually more balanced. Also because they are using a grater force, the goal's acceleration will be farther.
Even better shot. Do the same thing one more time with the size 5 ball.
Nothing in this cell is related to Newton's third law. It's pretty much just the two players talking about which soccer ball the player (in red) will be kicking first.
Nice job. I think we've had enough practice for one day. Go home and get some rest
The player kicked the ball with a great force (as hard as he could) which made the ball have a large acceleration and the ball travel farther.
The player kicked a different ball with more mass and used the same amount of force as he did the ball he kicked in the previous cell. Since the ball had more mass, when he kicked it with the same amount of force it did not accelerate as much and went a little less far.
The player then kicks a ball with a greater mass than the first two balls and he kicks it with same amount of force as the first two soccer balls. Due to the fact that the ball has a larger mass than the first two he kicked, not only does the ball accelerate less, it also doesn't travel very far.
Newton's second law is that the acceleration of an object increases with increased force and decreases with increased mass. The last few cells represent the second part of this law: the acceleration of an object decreases with increased mass. As the mass of the soccer ball increased, the player would still continue to kick the ball with the same amount of force so that as each ball's mass got larger, the ball would not accelerate as much and would not go as far.