Momentum and Impulse terms Flashcards
Momentum(p)?
The product of the mass and velocity of the object.
Newton’s second law in terms of momentum?
The resultant/net force that acts on an object is equal to the rate of change in momentum of the object in the direction of the resultant/net force.
Impulse?
The product of the resultant/net force acting on an object and the time the resultant/net force acts on the object.
System?
A small part of space that we are consider when investigating and solving a particular problem.
Law of conservation of Momentum?
The total linear momentum in an isolated system is constant in magnitude and direction.
Elastic and inelastic?
A collision is considered elastic if the total kinetic energy of the objects in the system during the collision is conserved. Otherwise it is an inelastic collision.
Kinetic energy(Ek)?
The energy an object has because it is in motion.
Internal force?
Force that objects exert on each other within a system.
The principle of conservation of linear momentum
The total linear momentum of an isolated system remains constant (is conserved)
External force
Forces which organise outside the system.
Inelastic collision
A collision in which total momentum is conserved.
Elastic collision
A collision in which total momentum and total kinetic energy are both conserved.
Isolated system
A system on which the net external force is zero
