Chapter 3 Force and Motion

What do scientists do when they are curious about something?

What are you using when you push open a door with your hand?

What force makes a ball slow down and stop?

Why did Newton have to leave college and return home?

What effect does friction have on an object?

Sir Issac Newton studied what in college?

What does speed tell you about a moving object?

Force is...

When you throw a ball, Earth's _________ makes it fall towards Earth.

How can you tell whether an object has moved?

How did Newton finally develop his ideas about gravity?

Where did Newton live?

___________ is a change in position.

What would happen if an object was not stopped by friction?

What did Isaac Newton write about in the first book of Principia?