Electrons are surrounded by an invisible force field.

All solid objects are elastic (springy) up to a point; they deform when a force is applied to them (we push or pull on them)

In the distance vs. strength experiment, the strength was measured by ___________, whereas in the type of magnet vs. strength experiment, the strength was measured by __________.

What happened when the drum was struck?

What do you predict would happen to pattern of the vibration waves if we made the stick even shorter and struck it just as hard?

If we know that objects that vibrate create sound then how do the  differences in the patterns in the grooves on the record create sound?

If you are using a magnet to generate an electric current in a straight wire, what could you do to make the current stronger?

In a collision, a single isolated force can occur.

You and your friend are waiting in line for the bumper car ride. Your friend tells you that since he is taller and heavier than you he is going to be able to bump you so much harder than you can bump him. What is the best response to your friend’s claim?

Newton’s second law states: