Gravity pushes down on a book, a table pushes up on a book the force at work is what?

• Balanced

• Unbalanced

• Momentum

• Centrifugal

When a table causes the book to fall toward the floor a force is acting on the book to travel to the floor. Name that force.

• Electricity

• Magnetism

• Unbalanced

• Lever

Forces working on an object in equal and opposite directions are what type of forces?

• Unbalanced

• Balanced

• Uneven

• Newtons

The tendency of an object to resist changes in it's state of motion is what?

• Inertia

• Centrifugal

• Centripetal

• Rest

This describes an objects velocity and direction.

• State of Motion

• State of Rest

• State of Direction

• State of Displacement

The amount of "matter" in an object is known as what?

• Mass

• Weight

• Volume

• Density

This measure describes the amount of gravitational force is being exerted on an object.

• Weight

• Mass

• Force

• Volume

What is the velocity of an object at rest?

• Zero

• Net

• Neutral

• 9.87 Squared

The Moon is kept in its orbit by two forces. One is The Earth's Gravity pulling it in. The other is what?

• Inertia

• Pressure

• Centrifugal

• Spin rate

This idea of the force of gravity was first described by which mathematician?

• Isaac Newton

• John Keppler

• Demetri Medlevid

• Albert Einstein