Forces & Motion (Week 1 Quiz)

What is a force?

• A type of energy

• The rate at which an object performs work

• A push or a pull

• An object that makes up matter

Force is measured in:

• Newtons

• Joules

• Meters

• Meters per second

Drag is a friction-like force exerted by:

• Gases

• Liquids

• Solids

• Both a and b

Which force is responsible for causing leaves from a tree to fall to Earth’s surface?

• Magnetic force

• Electric force

• Gravitational force

• Friction

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Which object exerts gravity?

• Earth

• The moon

• A basketball

• All of the above

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Which of Newton’s Laws is most important to describing what happens to objects during a collision?

• Newton’s 1st Law

• Newton’s 2nd Law

• Newton’s 3rd Law

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What type of force opposes motion, causing moving objects to slow down and/or stop?

• An applied force

• Friction

• Magnetic force

• Electric force

Match each of Newton’s Laws with its correct description.

• a. Newton’s 1st Law - For every action there is an equal and opposite reaction.

• b. Newton’s 2nd Law - An object at rest will stay at rest and an object in motion will continue its motion unless acted on by unbalanced forces.

• c. Newton’s 3rd Law - An object accelerates when a force acts on an object with mass.

• d. Newton’s 1st Law - An object at rest will stay at rest and an object in motion will continue its motion unless acted on by unbalanced forces.

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Which of Newton’s Laws is most important to describing what happens during a collision?

• Newton’s 1st Law

• Newton’s 2nd Law

• Newton’s 3rd Law

• Newton’s Law of Universal Gravitation

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What is the formula for acceleration?

• Acceleration = change in velocity × time

• Acceleration = change in velocity ÷ time

• Acceleration = time ÷ change in velocity

• Acceleration = change in velocity + time

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