Newton's Laws of Motion Quiz

What does Newton's First Law of Motion state?

• An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.

• For every action, there is an equal and opposite reaction.

• The force acting on an object is equal to the mass of that object times its acceleration.

• The amount of inertia an object has depends on its weight.

What is inertia?

• The tendency of an object to resist changes in its velocity.

• The force that pulls objects toward each other.

• The speed of an object in a particular direction.

• A measure of how hard it is to stop an object.

Which of the following is the best example of Newton's Third Law of Motion?

• A ball rolling down a hill.

• A rocket launching into space.

• An apple falling from a tree.

• A book resting on a table.

According to Newton's First Law of Motion, what will happen to a car moving at a constant velocity if no external forces act on it?

• It will gradually slow down.

• It will speed up.

• It will continue moving at the same velocity.

• It will immediately stop.

What does inertia depend on?

• The speed of an object.

• The mass of an object.

• The force applied to an object.

• The direction of motion.

Which of Newton's laws explains why it is harder to push a heavy object than a light one?

• First law of motion.

• Second law of motion.

• Third law of motion.

• The law of universal gravitation.

What happens according to Newton's Third Law when you sit in a chair?

• The chair pushes up against you with the same force you are pushing down on it.

• The chair moves downwards because of your weight.

• You and the chair both move upwards.

• Nothing, the forces cancel out.

If you were in space and pushed a ball away from you, what would happen?

• The ball would stay still.

• You would move in the opposite direction of the ball.

• The ball would move in a circle around you.

• Nothing, there is no gravity in space.

What is required to change the velocity of an object?

• Gravity

• An unbalanced force

• A balanced force

• Inertia

Which of the following is an example of Newton's First Law of Motion in everyday life?

• A car stopping suddenly and the passengers lurching forward.

• A ball being thrown upwards and coming back down.

• Water boiling in a pot.

• A plant growing towards the light.