Newton's Laws and Momentum

What is an example of friction in action?

• Rubbing your hands together creates heat due to friction.

• Sliding a book across a table without resistance.

• A car moving smoothly on a well-paved road.

• A ball rolling down a hill without any obstacles.

What is Newton's 1st Law of Motion?

• 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.

• 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 is Newton's 2nd Law of Motion?

• The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. (F = ma)

• An object at rest will remain at rest unless acted upon by an external force.

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

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

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What is friction?

• The force that opposes motion between two surfaces in contact.

• A type of energy that is stored in objects.

• The speed at which an object moves in a straight line.

• The ability of an object to float on water.

What is the relationship between force, mass, and momentum?

• Force is equal to mass times velocity.

• Force causes changes in momentum, and momentum is the product of mass and velocity.

• Mass is the product of force and momentum.

• Momentum is independent of force and mass.

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What is Newton's 3rd Law of Motion?

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

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

• The force of gravity is proportional to the mass of the objects involved.

• For every force, there is a reaction force that is equal in size and opposite in direction.

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What is net force?

• The total mass of an object multiplied by its acceleration.

• The overall force acting on an object when all the individual forces are combined.

• The force exerted by gravity on an object.

• The difference between the largest and smallest forces acting on an object.

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What is an example of Newton's 3rd Law in action?

• When you jump off a small boat, the boat moves backward as you move forward.

• A ball rolling down a hill accelerates due to gravity.

• A car accelerating on a flat road.

• A person pushing against a wall and not moving.

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What is a force?

• A type of energy

• A push or pull on an object.

• A measure of mass

• A change in velocity

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What is inertia?

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