What does it mean to say that friction resists motion?

• Friction points in the same direction as motion.

• Friction points in the opposite direction of motion.

• Friction points at a right angle to motion.

• Friction has no effect on motion.

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Force is a vector which means it has size and ____________.

• Distance

• Volume

• Direction

• Time

If forces on an object are balanced, what is the net force equal to?

• Zero

• The force of gravity

• The support force opposing gravity

• There is not enough information to determine the net force.

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What kind of force always changes the motion of an object?

• Friction

• Contact Force

• Gravity

• Unbalanced Force

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Who was it that came up with the theory that Newton's first law of motion was based on?

• Albert Einstein

• Nikola Tesla

• James Watt

• Galileo Galilei

What is Newton's first law of motion also called?

• The Law of Mass

• The Law of Force

• The Law of Physics

• The Law of Inertia

How do you measure an object's inertia?

• Speed

• Mass

• Distance

• Volume

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What happens to the acceleration of an object if the net force on it increases?

• The acceleration increases.

• The acceleration decreases.

• The acceleration is perpendicular to motion.

• There is no effect.

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What is the standard unit of force?

• Kilogram (kg)

• Meters per Second (m/s)

• Meters per Second Squared (m/s²)

• Newtons (N)

What formula is used to calculate acceleration according to Newton's second law of motion?

• Acceleration = Force x Mass

• Acceleration = Force / Mass

• Acceleration = Mass / Force

• Acceleration = Mass + Force

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