Vocab Flashcards
Net force
Sum of all the forces that are acting on an object
Force
A puss or pull
Friction
Force that opposes the sliding motion between 2 touching surfaces
Gravity
Attractive force between two objects that depends on the masses of the objects and the distance between them
Field
A region of space in which every point has a physical quantity, such as force
Weight
Gravitational force on an object
Newton’s first law of motion
to as the law of inertia. 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.
Inertia
Inertia is the resistance of any physical object to any change in its state of motion, including changes to its speed and direction. It is the tendency of objects to keep moving in a straight line at constant velocity.
Newtons 2nd law
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 3rd law
Formally stated, Newton’s third law is: For every action, there is an equal and opposite reaction. The statement means that in every interaction, there is a pair of forces acting on the two interacting objects. The size of the forces on the first object equals the size of the force on the second object.
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
Terminal velocity is the highest velocity attainable by an object in free fall. It occurs once the sum of the drag force (Fd) and buoyancy equals the downward force of gravity (FG) acting on the object. Since the net force on the object is zero, the object has zero acceleration.
Free fall
Downward movement under the force of gravity
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 momentum conservation can be stated as follows. For a collision occurring between object 1 and object 2 in an isolated system, the total momentum of the two objects before the collision is equal to the total momentum of the two objects after the collision.
