Conservation of Mass & Energy

Conservation of Mass & Energy

Published on 13 October 2020
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Transcript
00:01
Conservation of Energy & Momentum
00:07
Main Idea #1
00:08
In a closed system, the total mechanical energy is conserved.
00:16
What is a closed system?
00:18
A physical system that does not allow transfer of matter or energy in or out of the system.
00:26
Matter: any substance that has mass and takes up space.
00:35
MECHANICAL ENERGY
00:39
It is energy in an object due to its motion or position, or both.

00:44
Energy: the capacity for doing work; energy cannot be created nor destroyed.
00:58
Main Idea #2
00:58
In a closed system, the total momentum is conserved.
01:08
MOMENTUM MASS
01:09
The quantity of motion of a moving body, measured as a product of its mass and velocity.
01:10
The measure of the amount of matter in an object.