Chapter+2,+Section+6

What do you see? I see a kid on a rolling chair who went up to a wall, and kicked himself off it, creating an uneven force on the chair. Since the wall isn't going to move, he ended up moving the chair instead. I think he created an unbalanced force on the chair.

What do you think? I think i would say to get a running head start to gain momentum, and then he should lift his legs around level with his head so he looks like he is horizontal. This would allow for the greatest height achieved without hitting the pole.

Newton's 3rd Law: " Exert a force forwards the ground bending knees etc"

Physics to Go:

1. Yes there is because the shot put is trying to fall to the ground and the act of lifting the shot put is acting against this. When you throw it, you have to create a large unbalanced force to lift it in the air.

2. The chair is trying to resist bending or moving downward, and to achieve this, it creates enough force to keep it from deflecting too much. When you sit in a chair, it does have a deflection, but depends on the type of chair how much it deflects.

3. It measures how much it needs to push back to keep the scale from breaking.

4. When you hit a ball with a bat, the bat exerts a much larger force than the ball, which causes it to move at a very fast velocity in the opposite direction. Sometimes, in certain circumstances, the bat may break. This can happen if it is a bad bat, a fast pitch, and a strong hitter. The bat, if made of a weak material, may have a lower maximum force that can be exerted. If the pitcher throws a fast pitch and the hitter hits very hard, the bat might be overpowered and either crack or break.

5. When a 70 kg line backer hits a 50 kg running back, both of whom are traveling at 10 m/s, there is more force behind the linebacker because he has a greater mass. This force would easily overcome the running back and throw him backwards.

6. The player would hit the board, the side would bend, along with the glass. His body would also compress as it tries to slow down, and the equal force of the board would stop him. If he was traveling faster and was heavier, there would be a chance he would break the board.

7. The players want to wear gloves because it cushions the ball, giving it a little more room to slow down, and also because it transfers the energy into glove, then the hand. If it transferred directly into the hand, there would be a lot more pain. It would also be the force of the glove, combined with the force of the hand that stopped the ball.

8. Okay so the soccer player is about to kick the ball, he kicked it, and it bent with the force of the foot hitting it.