Momentum Flashcards

Momentum

The measure of how much "motion" an object has OR how hard it is to stop a moving object

What quantity is momentum

Momentum is a vector quantity

Equation for momentum

p = m x v

Kinetic energy

The energy an object has due to its motion

What quantity is kinetic energy

Kinetic is a scalar quantity

Equation for kinetic energy

Ek=1/2 x m x v^2

Conservation of momentum

Momentum cannot be created or destroyed but transferred from one object to another

Total momentum of a system remains…

Constant

Equation for conservation of momentum

P system, i = P system, f

Equation for conservation of momentum (written)

Initial total momentum = final total momentum

Impulse (J)

Is the change in momentum caused during a collision

Equation for impulse

J = F x t

Equation for impulse (written)

Impulse = force x time

How does momentum transfer?

Momentum transfers from the object with the greater momentum to the object with less.

How else can impulse be defined?

Impulse can also be defined by the product of a force acting on an object by the time it is applied.

Units for momentum

kgm/s or Ns

How is force proportional to time?

Force is indirectly proportional to time, as one increases, the other decreases.