Chapter 2: Forces and Motion

Front

Besides a strength, or magnitude, what does every force have?

Back

direction

Front

What happens when an object accelerates?

Back

Its speed or direction changes.

Front

A ball is rolled across four different surfaces with the same force. Which surface will slow the movement of the ball the most? (Options: tile floor, paved road, grassy field, cement sidewalk)

Back

grassy field

Front

When you ride a roller coaster, what makes your body rise out of its seat at the top of the hill?

Back

inertia

Front

How do electric and magnetic forces act on different objects?

Back

They either push or pull objects.

Front

How can you complete this sentence so it is always true?
The greater the net force acting on an object,

Back

the greater the acceleration of the object.

Front

What always happens when the forces acting on an object are equal in strength and opposite in direction?

Back

The motion of the object does not change.

Front

When the sun is low in the sky in the morning, trees form

Back

long shadows.

Front

How many laws of motion were created by Sir Isaac Newton?

Back

3

Front

What is the 1st Law of Motion (the Law of Inertia)?

Back

An object will stay in uniform motion unless a force acts on the object.