Forces and Motion 1

Who wrote the Mathematical Prinicples of Natural Philosophy that included the Three Laws of Motion?

• Albert Einstein
• Isaac Newton
• J. Robert Oppenheimer
• Charles Darwin

What does Newton's First Law of Motion state?

• Objects in motion stay in motion and objects at rest stay at rest unless acted upons by an unbalanced force.
• Force = mass x acceleration
• Every action has an opposite and equal reaction.

What is a force?

• The contact of the surfaces of two objects
• An upward or downward motion
• An object that stays at the same speed
• A push or pull acting on an object as a result of its interaction with another object.

What type of force is an attraction between two objects?

• contact
• gravity
• friction
• applied force

What type of force resist motion between two surfaces that are pressed together?

• contact force
• gravity
• friction
• normal force

If the net force is equal to zero, what are the forces acting on the object?

• balanced
• unbalanced

Balanced forces do not change the objects speed or _______ .

• direction
• distance 
• time
• mass

_______ is a push or pull acting upon an object.

• force
• motion
• vector
• speed

All objects in the universe have a gravitational attraction to each other. 

• True
• False

What force brings the pencil down?

• Applied force
• Magnetic force
• Normal force
• Gravitational force