# Shared Flashcard Set

## Details

Mechanics
N/A
21
Physics
10/28/2011

Term
 Displacement
Definition
 distance traveled in a particular direction (change in position)
Term
 Velocity (u,v)
Definition
 rate of change of displacement
Term
 Speed (u,v)
Definition
 rate of change of distance
Term
 Acceleration (a)
Definition
 rate of change of velocity
Term
 Newton's First Law of Motion
Definition
 An object at rest remains at rest and an object in motion remains in motion at a constant speed in a straight line unless acted on by an unbalanced force.
Term
 Newton's Second Law of Motion
Definition
 An unbalanced force will cause an object to accelerate in the direction of the net force. The acceleration of the object is proportional to the net force and inversely proportional to its mass. (F­net = ma or Fnet = Δ p/Δ t (net force = rate of change of momentum))
Term
 Newton's Third Law of Motion
Definition
 When two bodies A and B interact (push or pull), the force that A exerts on B is equal and opposite to the force that B exerts on A.
Term
 Translational Equilibrium
Definition
 net force acting on a body is zero
Term
 *Linear Momentum (p)
Definition
 product of mass and velocity
Term
 *Impulse
Definition
 change in momentum
Term
 *Law of Conservation of Linear Momentum
Definition
 The total momentum of an isolated system (no external forces) remains constant.
Term
 *Work (W)
Definition
 The product of a force on an object and the displacement of the object in the direction of the force.
Term
 Kinetic Energy (EK)
Definition
 product of ½ times the mass of an object times the square of an object’s speed
Term
 Change in Gravitational Potential Energy
Definition
 product of an object’s mass times the gravitational field strength times the change in height
Term
 *Principle of Conservation of Energy
Definition
 The total energy of an isolated system (no external forces) remains constant. (OR – Energy can be neither created nor destroyed but only transformed from one form to another or transferred from one object to another.)
Term
 *Elastic Collision
Definition
 a collision in which both momentum and kinetic energy are conserved
Term
 Inelastic Collision
Definition
 a collision in which momentum is conserved but kinetic energy is not conserved
Term
 *Power (P)
Definition
 The rate at which work is done or the rate at which energy is transferred.
Term
 *Efficiency (eff)
Definition
 The ratio of the useful energy (or power or work) output to the total energy (or power or work) input.
Term
 Centripetal acceleration
Definition
 The acceleration due to changing velocity direction. It points toward the center of the circular path and equals.
Term
 Centripetal force
Definition
 The name of any force or resultant of individual forces that points toward the center of a circular path.
Supporting users have an ad free experience!