# Momentum (Linear and Angular)

### Description

Mind Map on Momentum (Linear and Angular), created by Michael Bueno7256 on 11/20/2014.
Mind Map by Michael Bueno7256, updated more than 1 year ago
 Created by Michael Bueno7256 over 8 years ago
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## Resource summary

Momentum (Linear and Angular)
1. Conservation of momentum
1. Conservation of energy

Annotations:

• Think of energy as a bank account. Energy can be withdrawn, at which point it changes form but it does NOT disapear
1. Total momentum of an isolated system is conserved/constant which means that Pf=Pi and Δp = 0, in all directions/dimensions

Annotations:

• (if the sum of external forces = 0 is negligible AND no mass enters or leaves)
1. If ΣWork > 0 then there is ΔP(>0)
1. 2 Body Collisions (Linear Momentum)
1. Elastic
1. A perfectly elastic collision is defined as one in which there is no loss of kinetic energy in the collision
1. One Dimensional
1. Two Dimensional
1. Attachments:

1. To find theta between two elastic collisions, use
1. To find velocities, we use relative velocity trick, (v2 − v1)f = −(v2 − v1)i
2. Inelastic
1. An inelastic collision is one in which part of the kinetic energy is changed to some other form of energy in the collision.
2. Linear
1. Vector
1. M= Kg
1. V= M/s
1. Kgm/s
2. Angular Momentum= L
1. Vector quantity
1. Moment of Inertia - Kg x meters^2
1. The rotational analog to mass- it represents an objects rotational inertia. An object's rotational inertia is determined by the chosen axis of rotation and is additive.
1. Parallel axis theorem: The moment of inertia of a parallel axis is equal to the moment of inertia of an object's center of mass + the total mass x the distance between the center of mass and the parallel axis of rotation
2. Angular Velocity- ω

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