IPC.2 Flashcards
Net force
In physics, net force is the overall force acting on an object
Force
strength or energy as an attribute of physical action or movement
Friction
the resistance that one surface or object encounters when moving over another.
Gravity
the force that attracts a body toward the center of the earth, or toward any other physical body having mass. For most purposes Newton’s laws of gravity apply, with minor modifications to take the general theory of relativity into account.
the degree of intensity of this, measured by acceleration
Field
an area of open land, especially one planted with crops or pasture, typically bounded by hedges or fences.
Weight
a body’s relative mass or the quantity of matter contained by it, giving rise to a downward force; the heaviness of a person or thing.
“he was at least 175 pounds in weight”
Newton’s first law of motion
An object that is at rest will stay at rest unless an external force acts upon it. An object that is in motion will not change its velocity unless an external force acts upon it.
Inertia
a tendency to do nothing or to remain unchanged.
Newton’s second law of motion
Newton’s second law of motion can be formally stated as follows: The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object.
Newtons third
A force is a push or a pull that acts upon an object as a results of its interaction with another object. Forces result from interactions! As discussed in Lesson 2, some forces result from contact interactions (normal, frictional, tensional, and applied forces are examples of contact forces) and other forces are the result of action-at-a-distance interactions (gravitational, electrical, and magnetic forces). According to Newton, whenever objects A and B interact with each other, they exert forces upon each other. When you sit in your chair, your body exerts a downward force on the chair and the chair exerts an upward force on your body. There are two forces resulting from this interaction - a force on the chair and a force on your body. These two forces are called action and reaction forces and are the subject of Newton’s third law of motion. Formally stated, Newton’s third law is:
Air resistance
The air resistance is a special type of frictional force that acts upon objects as they travel through the air. The force of air resistance is often observed to oppose the motion of an object.
Terminal velocity
the constant speed that a freely falling object eventually reaches when the resistance of the medium through which it is falling prevents further acceleration.
Free fall
downward movement under the force of gravity only.
Centripetal force
a force that acts on a body moving in a circular path and is directed toward the center around which the body is moving.
Law of conservation of momentum
The Law of Action-Reaction (Revisited)
Momentum Conservation Principle
Isolated Systems
Using Equations as a Recipe for Algebraic Problem-Solving
Using Equations as a Guide to Thinking
Momentum Conservation in Explosions
One of the most powerful laws in physics is the law of momentum conservation. The law of momentum conservation can be stated as follows.
