Motion Flashcards
(25 cards)
What is a balanced force?
The forces add up to zero.
What is a force?
A push or pull.
What is an unbalanced force?
The forces add up to a nonzero amount that results in an acceleration.
What is the net force?
The sum of all the forces acting on an object.
What is a force diagram?
A diagram where the size and direction of the forces acting on an object are represented with arrows.
What is speed?
The distance an object travels in a period of time.
What is average speed?
total time
What is constant speed?
The speed is the same during an event.
What is velocity?
The rate an object changes position (speed with a direction)
What is acceleration?
The rate at which an object changes velocity.
What is friction?
A force that opposes motion, ex. rolling, sliding, static.
What is inertia?
The tendency of a mass to resist having their state changed.
What is weight compared to mass?
Weight is a force that can be found with m x g, and mass is the amount of matter an object has.
What is gravity?
A force due to the mass of objects that increases with increasing mass and decreases as distance increases.
What is a Newton?
A unit of force, 1 N = 1 kg x m/s sq.
What is a joule?
A unit of energy used for kinetic and potential, 1 J = 1 kg x m sq./sec sq.
What is kinetic energy?
The energy of objects in motion.
What is gravitational potential energy?
The energy stored in an object as the result of its vertical position or height.
What does the Law of Conservation of Energy state?
Energy cannot be created or destroyed, only transformed. TME = KE+GPE
What is a frame of reference?
A point the motion is measured from
ex. a starting line in a race
What is a vector quantity?
A quantity with a direction.
Distance is a _______ quantity and displacement is a _______ quantity.
Scalar, vector
If an object is speeding up, what direction will it’s acceleration be?
The same direction that is is traveling.
Acceleration is a scalar/vector quantity.
Vector
