Newton's Laws of Motion Quiz

What is Newton's First Law of Motion?

• An object at rest will start moving in the opposite direction, and an object in motion will continue moving in the same direction, unless acted upon by an external force.

• An object at rest will stay at rest, and an object in motion will stay in motion with a different speed and in a different direction, unless acted upon by an external force.

• An object at rest will stay at rest, and an object in motion will stay in motion with the same speed and in the same direction, unless acted upon by an external force.

• An object at rest will stay at rest, and an object in motion will stop immediately, unless acted upon by an external force.

According to Newton's Second Law of Motion, what is the formula to calculate force?

• F = mv

• F = m/a

• F = m^2a

• F = ma

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What is the SI unit of force?

• Second

• Meter

• Kilogram

• Newton

True or False: According to Newton's Third Law of Motion, for every action, there is an equal and opposite reaction.

• False

• True

• Sometimes true, sometimes false

• There is no reaction

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If a 10 kg cannonball is shot out at an acceleration of 8 m/s², what is the net force acting on it?

• 80 N

• 2 N

• 18 N

• 10 N

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A 6 kg dog is running with an acceleration of 4 m/s². What is the net force acting on it?

• 24 N

• 10 N

• 1.5 N

• 30 N

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What is inertia?

• The force that causes objects to fall towards the Earth

• The ability to change direction easily

• Resistance to changes in motion or rest.

• The tendency to move in a straight line

An object at rest will remain at rest, and an object in motion will continue moving with a constant velocity, unless acted upon by an external force. This statement is related to which law of motion?

• Newton's Third Law

• Newton's Second Law

• Newton's First Law

• Newton's Fourth Law

What is the relationship between force, mass, and acceleration according to Newton's Second Law?

• force = mass * acceleration

• force = mass / acceleration

• force = mass + acceleration

• force = mass - acceleration

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What is the relationship between the action and reaction forces according to Newton's Third Law?

• Equal in magnitude and parallel in direction.

• Equal in magnitude and random in direction.

• Equal in magnitude and opposite in direction.

• Equal in magnitude and same in direction.

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