Question

predict the motion
read each sentence and predict what will happen
according to newtons laws of motion.

1. newtons second law of motion...

you hit a ping - pong ball and a tennis ball with a tennis racket.
which one will travel farther?

1. newtons first law of motion...

if you leave a cookie on a plate and there is no one else in the house
where will the cookie be in an hour?

1. newtons third law of motion...

if you let the air out of a balloon, what will happen
to the balloon?

1. newtons first law of motion...

the horse youre riding stops quickly.
what happens to you?

1. newtons second law of motion...

a football player kicks a football and a balloon.
what will happen?

1. newtons third law of motion...

two ice skaters glide into each other at full speed.
what will happen?

1. newtons first law of motion....

an astronaut is floating in space where there isnt a gravitational pull.
what will happen?

Explanation:

1. According to Newton's Second Law \(F = ma\) (where \(F\) is force, \(m\) is mass, and \(a\) is acceleration). Assuming the same force is applied (by hitting with the racket), the ping - pong ball has a smaller mass. Since \(a=\frac{F}{m}\), a smaller mass gives a larger acceleration. Larger acceleration means it will travel farther.
2. Newton's First Law (Law of Inertia) states that an object at rest will stay at rest unless acted upon by an external force. Since there is no one else in the house (no external force like someone eating the cookie), the cookie will stay on the plate.
3. Newton's Third Law states that for every action, there is an equal and opposite reaction. When air is let out of the balloon (action), the balloon will move in the opposite direction (it will deflate and move due to the reaction force of the escaping air).
4. Newton's First Law: When the horse stops quickly (external force acts on the horse), your body (due to inertia) will continue to move forward, so you will fall forward.
5. Newton's Second Law: The balloon has a smaller mass than the football. When the same force (from the kick) is applied, since \(a = \frac{F}{m}\), the balloon will have a larger acceleration. So the balloon will move farther and faster than the football.
6. Newton's Third Law: When two ice - skaters glide into each other, they exert equal and opposite forces on each other. So they will bounce (move apart) in opposite directions.
7. Newton's First Law: In space with no gravitational pull (no external force in the context of this problem), an object (the astronaut) in motion (or at rest, assuming the astronaut was initially floating without any external force to change the state) will stay in that state. So the astronaut will continue to float in space.

Answer:

1. The ping - pong ball will travel farther.
2. The cookie will be on the plate.
3. The balloon will deflate and move (due to the reaction force of the escaping air).
4. You will fall forward.
5. The balloon will move farther and faster than the football.
6. They will bounce (move apart) in opposite directions.
7. The astronaut will continue to float in space.