Newton's 3 Laws Review

What is Newton's Second Law of Motion?

• The acceleration of an object depends on the mass of the object and the amount of force applied. (F = ma)

• An object in motion stays in motion unless acted upon by an external force.

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

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

What is the significance of the term 'net force'?

• Net force is the total force acting on an object after all the forces are combined.

• Net force is the force that is applied to an object in one direction only.

• Net force is the sum of all forces acting on an object without considering direction.

• Net force is the force that opposes the motion of an object.

Give an example of Newton's First Law of Motion.

• A book resting on a table will remain at rest until someone pushes it.

• A ball thrown in the air will eventually come back down due to gravity.

• A car accelerating on a straight road will continue to speed up indefinitely.

• A person jumping off a diving board will fall straight down into the water.

What is the effect of gravity on falling objects?

• Gravity causes objects to float away from the Earth.

• Gravity is a force that pulls objects toward the Earth, causing them to accelerate downwards.

• Gravity has no effect on the motion of objects.

• Gravity only affects objects that are in motion.

What is Newton's First Law of Motion?

• An object at rest stays at rest, and an object in motion stays in motion unless acted upon by an unbalanced force.

• An object will accelerate in the direction of the net force acting on it.

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

• An object in motion will eventually come to a stop without any external force.

What happens to an object when a balanced force acts on it?

• It accelerates in the direction of the force.

• It does not change its state of motion.

• It moves in the opposite direction of the force.

• It comes to a stop immediately.

What is an unbalanced force?

• A force that causes an object to accelerate or change its motion.

• A force that does not cause any change in the motion of an object.

• A force that acts in the opposite direction to motion.

• A force that is equal in magnitude and opposite in direction to another force.

What is the formula for calculating force?

• Force (F) = mass (m) × acceleration (a)

• Force (F) = mass (m) + acceleration (a)

• Force (F) = mass (m) / acceleration (a)

• Force (F) = mass (m) - acceleration (a)

What is Newton's Third Law of Motion?

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

• Objects in motion stay in motion unless acted upon by an external force.

• The acceleration of an object is directly proportional to the net force acting on it.

• Energy cannot be created or destroyed, only transformed.

What is inertia?

• The tendency of an object to resist a change in its motion.

• The force that causes an object to accelerate.

• The speed of an object in a given direction.

• The mass of an object multiplied by its velocity.