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  • Home
  • About
  • Student Portal
    • Physical Science
    • Biology
    • Chemistry
    • Physics
    • Human Anatomy & Physiology
    • Principles of Engineering
    • Civil Engineering & Architecture
    • Economics
    • Business Management & Ownership
  • CLASS CALENDAR
  • CLASS FEES
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  • Contact

Unit 8
Momentum

Picture
Conservation of Momentum illustrated by a collision of two objects
Picture
Conservation of Momentum illustrated by a cannon and projectile

Lecture outline
Momentum is "mass x velocity" (p = mv).
Thus, it can be thought of as "mass in motion".
We use the letter "p", because the Latin word 'petere' means "to go to", "to attack". It's where we get the words "impetuous, petulant, and impetus" 

"Impulse" is a concept Newton came up with to figure out his 2nd Law of Motion. We normally write the 2nd Law as "F=ma", but Newton originally expressed it using impulse.
Impulse is "change in momentum". Thus...
Picture
Collisions
In an "elastic" collision (billiard balls), both Kinetic Energy and momentum are conserved.
In an "inelastic" collision (billiard balls with Velcro), only momentum is conserved.
Picture
Reading
BJU book: Ch. 11
Apologia book: Ch. 9

Lab
"Collision Lab"

Homework

8.linear_momentum_homework__problems.docx
File Size: 26 kb
File Type: docx
Download File

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