The inertia of matter

Don1 · science forum Guru Joined: 28 Apr 2005 Posts: 1859

Inertia is a measure of the quantity of matter in a body, in that it is
the weight exerted on, and/or by it, divided by the acceleration (g) at
which it will free fall at a particular location.

The inertia of a cubic foot of water, is 62.4 lbf per 32.174'/sec^2,
and the inertia of a cubic decimeter of water, is 1 kg per 9.806 65
meters/sec^2.

Don

Morituri-|-Max · science forum Guru Joined: 05 May 2005 Posts: 509

"Don1" <dcshead@charter.net> wrote in message
news:1118543790.422866.242270@g14g2000cwa.googlegroups.com...

Clemens W · science forum Guru Wannabe Joined: 17 May 2005 Posts: 172

Don is till stuck in his infinite loop:

Don1 · science forum Guru Joined: 28 Apr 2005 Posts: 1859

The inertia of a body is its "rest mass"; or momentum "at rest": Speed
it up and it gains "momentum", slow it down and it looses momentum:
There are very few people who don't unconciously know this. Strong
people know and use momentum to increase their ability to break down
barriers, that weaker people "recognize" as barriers.

So it's within our power to vary our inertia, and/or momentum, by
varying our speed, to some extent; to soften impacts, or to increase
them. We can vary the speed, and/or velocity of the vehicles in which
we speedilly gad about too; to help us through snow and mud, and to
keep the vehicle under control decending steep grades.

Now what more do you need to understand that momentum is related to the
_speed_ of a body? To increase, or decrease its inertial "rest mass"?

Don

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