MOMENTUM, IMPULSE, WORK, ENERGY & POWER Flashcards
linear momentum
as the product of the mass and the velocity of an object (vector)
newtons second law in terms of momentum
the net force acting on an object is equal to the rate of change of momentum
isolated system
is one that has no net external force acting on it
law of conservation of linear momentum
the total linear momentum of an isolated system remains constant (is conserved)
elastic collision
as a collision in which both momentum and kinetic energy are conserved
inelastic collision
as a collision in which only momentum is conserved.
impulse
the product of the net force and the contact time
work
as the product of the displacement and the component of the force parallel to the displacement (scalar)
gravitational potential energy
as the energy an object possesses due to its position relative to a reference point
kinetic energy
the energy an object has as a result of the objects motion
mechanical energy
the sum of gravitational potential and kinetic energy at a point
the law of conservation of energy
as the total energy in a system cannot be created nor destroyed only transformed from one form to another
the principle of conservation of mechanical energy
in the absence of air resistance or any external forces, the mechanical energy of an object is constant.
the work-energy theorem
the work done by a net force on an object is equal to the change in the kinetic energy of the object
power
as the rate at which work is done or the rate at which energy is transferred
