Newton's Laws Review

What is Newton's first law of motion?

• The force of an object is equal to its mass times its acceleration

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

• 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

• The rate of change of momentum of an object is proportional to the applied force

What is Newton's second law of motion?

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

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

• A body remains at rest, or in motion at a constant speed in a straight line, unless acted upon by a force.

• The rate of change of momentum of an object is proportional to the applied force.

What is Newton's third law of motion?

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

• The force exerted on an object is equal to its mass times its acceleration.

• A body in motion stays in motion, and a body at rest stays at rest unless acted upon by an external force.

• The sum of the forces acting on an object is equal to the mass of the object times the acceleration of the object.

What is force?

• A push or pull upon an object resulting from the object's interaction with another object

• The mass of an object

• The speed of an object in motion

• A measure of the gravitational pull on an object

What is mass?

• A measure of the amount of matter in an object

• The amount of space an object occupies

• A measure of the force of gravity acting on an object

• The amount of energy an object has

What is a vector?

• A quantity having direction as well as magnitude

• A type of animal

• A computer programming language

• A model of car

What is inertia?

• A property of matter by which it remains at rest or in uniform motion in the same straight line unless acted upon by some external force

• The rate of change of velocity of an object

• The force that attracts a body toward the center of the earth, or toward any other physical body having mass

• The quantity of motion of a moving body, measured as a product of its mass and velocity

What is acceleration?

• The rate at which velocity changes over time

• The force applied to an object

• The distance covered by an object

• The speed of an object in a given direction

What is net force?

• The force that is left over after all the forces are added up

• The force applied by the net

• The total mass of an object

• The speed of an object in motion

What is the net force of the picture?

• 17 N

• 3 N