Question

the science of nfl football: newtons laws of motion
directions: visit each of the links below and view the episode of the science of nfl football. there is a separate video for each of newtons three laws of motion. answer the following questions from each video.
newtons first law (link: http://bit.ly/2raogoa)

1. in football we see unbalanced forces when one player exerts an unbalanced force (hits) on another player and causes that player to______.
2. in physics, a players natural resistance to an unbalanced force is called______.
3. how are mass and weight different?
4. if a player has more mass they will also have more______.

newtons second law (link: http://bit.ly/2hapcqd)

1. what is the formula for newtons second law?
2. impulse is just a change in______.

newtons third law (link: http://bit.ly/2hcsacl)

1. newtons third law is sometimes called?______
2. newtons third law has to do with momentum. the formula for momentum is?
3. according to newtons third law, is the total momentum the same after the two players collide?

Explanation:

1. According to Newton's first - law, an unbalanced force causes a change in motion.
2. Inertia is the natural resistance to an unbalanced force.
3. Mass is the amount of matter in an object, while weight is the force of gravity on an object ($W = mg$).
4. Weight is proportional to mass ($W = mg$), so more mass means more weight.
5. Newton's second - law formula is $F=ma$ (Force equals mass times acceleration).
6. Impulse is a change in momentum.
7. Newton's third law is sometimes called the law of action - reaction.
8. The formula for momentum is $p = mv$ (momentum equals mass times velocity).
9. According to Newton's third law and the law of conservation of momentum, the total momentum is the same after two players collide in an isolated system.

Answer:

1. Change motion
2. Inertia
3. Mass is the amount of matter; weight is the force of gravity on an object.
4. Weight
5. $F = ma$
6. Momentum
7. The law of action - reaction
8. $p=mv$
9. Yes