Newton's First Law of Motion can best be defined by which statement.

• Force (N) equals the mass of an object times the acceleration of the object.
• For every action there is an equal and opposite reaction.
• A body at rest tends to remain at rest. A body in motion tends to remain in motion unless acted on by a separate force.
• Inertia, the first law is only about inertia nothing else but inertia.

Newton's Third Law of Motion is best defined by which statement?

• A body at rest tends to remain at rest.
• A body in motion tends to remain in motion unless acted on by another force.
• For every action there is an equal and opposite reaction.
• Inertia, it is all about inertia and speed and motion.

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Newton's Third Law of Motion is best defined by which statement?

• A body at rest tends to remain at rest.
• A body in motion tends to remain in motion unless acted on by another force.
• For every action there is an equal and opposite reaction.
• Inertia, it is all about inertia and motion.

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Newton's Second Law of Motion can be defined by using the following formula.

• Momentum = mv
• Force (N) = ma
• Speed = d/t
• Velocity = d/t with a direction

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In physics, what is a reference point?

• A fixed point to compare a moving object too.
• A point on a map used for reference.
• The point at the end of your pencil.
• A statement made about motion.

In physics, what is the best definition of motion found in these four choices?

• reference point

• acceleration

• The change in position of an object over time.

• velocity

Velocity is often defined as

• acceleration.
• speed with a direction.
• reference point.
• motion.

Speed is calculated by dividing distance by time.  If a car is driven for 120 kilometers in 2 hours what is the speed of the car in kilometers/hour?

• 240 miles/hour
• 60 miles/hour
• 240 kilometers/hour
• 60 kilometers/hour

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In physics, what is the action and reaction in observed by in this photograph?

• rocket sitting still and then blasting off.
• rocket fuel exploding and rocket moving.
• rocket moving and moving up.
• rocket payload moving into orbit.

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A force can simply be explained by these words.

• Inertia and momentum.
• Speed and Velocity
• Reference point and motion
• A push or a pull on an object.

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