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Topic 7: Linear Momentum - Coggle Diagram
Topic 7: Linear Momentum
Momentum and Its Relation to Force
Momentum
Newton's 2nd Law
Force = rate of change of momentum
Conservation of Momentum
Collision taken at a short time interval
Ignore external forces
The internal forces are equal and opposite
Total momentum is constant
Collisions and Impulse
impulse, J
Impulse = area under F-t graph
Time of collision very short
F is average force
Conservation of Energy and Momentum in Collisions
Elastic collison in 1-dimension
Inelastic collision in 1-dimension
Momentum is conserved
Yes
Yes
Yes
Form 2 equations from the conservations
Kinetic energy is conserved
No
Collisions in Two or Three Dimensions
Same concept with elastic collison and inelastic collison in 1-dimension
Resolve velocity vector into components
Centre of Mass
In 1-dimension
In 2 or 3-dimensions
Same concept with centre of mass in 1-dimension
Resolve displacement vector into components
Same with
Center of gravity
Point at which the gravitational force can be considered to act
Systems of Variable Mass, Rocket Propulsion
