Forces And Motion Flashcards
Newton’s second law is describing this when an object moves by unbalanced force
Motion of an object
Mathematical equation for velocity of a falling object
(Change in v)=g x t
Constant velocity of a falling object when the force of air resistance is equal in magnitude and opposite in direction to the force of gravity
Terminal velocity
The force that opposes the motion of objects through air
Air resistance
The force that causes it to be very difficult to see 1st law in action
Friction
Quantity defined as the product of the mass and velocity of an object
Momentum
The curved path that an object follows when thrown, launched, or otherwise projected near the surface of the Earth
Projectile motion
The unbalanced force that causes objects to move in a circle path
Centripetal force
Equation for momentum
P= m x v
When objects collide the total amount of momentum stays the same
Law of Conservation of Momentum
The tendency of an object to resist being moved or, if object is moving to resist a change in speed or direction until an outside force acts on the object
Inertia
The amount of net force acting on objects described by the 1st law
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Golf ball sitting on a tee
Example of an object at rest
Mass of the combined objects is equal to the masses of the two objects added together
Objects sticking together
The transfer of momentum causes objects to move in different directions at different speeds
Bouncing off each other
Mathematical expression for 2nd law
A=F/m
Newtons 3rd law simply stated
All forces come in pairs
Types of force that are exerted after another force has already occurred
Equal and opposite
The total net force on an object if action and reaction forces act on the same object
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Explains why it isn’t always easy to see reaction force to an action force: ball is pulled toward the earth, not the earth is pulled toward the ball
Newtons 2nd law
Two things that A is dependent on according to 2nd law
Mass and force
What acts on objects to make them move or stop
Unbalanced force
