[AMY, SPOKEN]
Person A.

Person B.

A is walking toward B at a rate of three miles per hour and B is walking toward A at a rate of two miles per hour. How fast does B perceive A to be walking?

[ADAM, SPOKEN]
Newton's first law of motion - A body in a state of uniform motion will remain in that state of motion unless an external force is applied to it.

[CATHERINE, SPOKEN]
I am standing still.

On the earth.

The earth spins at a rate of one thousand and seventy miles per hour. The earth orbits the sun at a rate of sixty-seven thousand miles per hour. The sun travels through the galaxy at a rate of four thousand and ninety thousand miles per hour.

I am NOT standing still.

[ANTHONY, SPOKEN]
"When you are courting a nice girl, an hour seems like a second. When you sit on a red-hot cinder, a second seems like an hour. That's relativity."

- Albert Einstein.

[MIKE, SPOKEN]
Newton's second law of motion - A change of motion is proportional to and is made in the direction of the force applied.
[MIRA, SPOKEN]
Person A.

[RYAN, SPOKEN]
Person B.

[MIRA, SPOKEN]
If A's position is seven miles from B, and A is walking at a rate of four miles per hour-

[RYAN, SPOKEN]
-and B is walking at a rate of five miles per hour at a forty-five degree angle to the path of Person A-

[MIRA & RYAN, SPOKEN]
-how soon will they meet-

[MIRA, SPOKEN]
-and how will the path of each person be altered by that contact?

[OLIVER, SPOKEN]
If a tree falls in the forest-

[CAROLINE, SPOKEN]
Newton's third law of motion - To every action there is an equal and opposite reaction.

[OLIVER, SPOKEN]
-and no one's there to hear it-
[SARA, SPOKEN]
"Only a life lived for others is a life worthwhile."
- Albert Einstein.

[OLIVER, SPOKEN]
-does it-

[PAUL, SPOKEN]
I'm rubber and you're glue. What you say bounces off me and sticks to you.

[JENNY, SPOKEN]
I exist only if observed.

[ALL, SPOKEN]
I am nothing without you.