Posted on 12/07/2011 6:54:14 PM PST by marktwain
A cannonball misfired by the "Mythbusters" TV show crew blasted through an East Dublin home Tuesday afternoon while its occupants were asleep. It then smashed through a window of a minivan parked a few hundred feet away.
No one was injured, and the home's residents did not wake up until the dust was settling on top of them, said an Alameda County Sheriff's Office spokesman.
The cannon was shot at the Sheriff's Office bomb range behind Santa Rita Jail about 4:15 p.m., said the spokesman, J.D. Nelson, who is also a consultant for the Discovery Channel TV show. He had been at the site with show producers all day, he said, though he said he was not by the cannon when it fired.
which they built -- at the range more than 50 times without incident, Nelson said.
Tuesday was different.
The cannonball was supposed to go through a few water-filled barrels and a concrete wall. Instead, it passed over the barrels, through the wall, and then took a "very unfortunate bounce that sent the ball skyward," Nelson said.
About 700 feet away, it bounced in front of a home on Cassata Place, then tore upward through the home's front door and out midway up the back wall of the two-story house. Light could be seen shining through a round, cantaloupe-sized hole from inside the house out to Tassajara Road.
(Excerpt) Read more at contracostatimes.com ...
You have a road tractor (and a class A license) to pull the trailer, or is it a goose neck rig that say, a 1 ton or better PU with a fifth wheel hitch could haul?
That's by the Camp Parks Army Reserve BaseI didn't know that was still there. My oldest brother was in the Air Force and was stationed there around 1955.
It’s been a long time since I took physics but as I remember it inertia was the tendency of a body at rest to stay at rest.
Or in motion. To paraphrase Newton, inertia is the tendency of a body to resist a change in its state, whether it is at rest or moving at a uniform speed in a straight line.
Roughly speaking, because of inertia it will take the same amount of energy to stop a cannonball, as it does to fire it out of the cannon. Which is why they don't stop moving when they hit houses, cars, redcoats, and so forth.
“Its been a long time since I took physics but as I remember it inertia was the tendency of a body at rest to stay at rest. Or in motion.”
I forgot that last part, thanks.
http://www.differencebetween.com/difference-between-momentum-and-vs-inertia/
Momentum vs Inertia
Inertia and momentum are two concept involved in the study of motion of solid bodies. Momentum and inertia are used to describe the current state of the object. Both inertia and momentum are concepts related to the mass of the object. Inertia and momentum are relativistic variants, which mean the equations for calculating these properties vary when the velocity of the object approaches the speed of light. However, Inertia and momentum plays a very important role in both Newtonian mechanics (classical mechanics) and relativistic mechanics.
Momentum
Momentum is a vector. It is defined as the product of the velocity and the inertial mass of the object. Newtons second law is mainly focused on momentum. The original form of the second law, force = mass x acceleration, can be written in terms of velocity change as: force = (mass x final velocity mass x initial velocity)/time. In a more mathematical form, this can be written as change of momentum/time. The acceleration described in Newtons formula is actually an aspect of momentum. The momentum is said to be conserved if no external forces act on a closed system. This can be seen in the simple instrument balance balls, or scientifically known as Newtons cradle. Momentum takes the forms of linear momentum and angular momentum. The total momentum of a system is equal to the combination of linear momentum and angular momentum
Inertia
Inertia is derived from the Latin word iners, which means idle or lazy. Inertia is a measurement of how lazy the system is. Inertia of a system gives us the meaning how hard it is to change the current state of the system. The higher the inertia of a system, harder it is to change the velocity, acceleration, direction of the system. Objects having higher masses have higher inertia. Thats why they are hard to move. Given that it is on a frictionless surface, a moving higher mass object would be hard to stop too. Newtons first law gives a very good idea about inertia of a system. It states an object not subject to any net external force, moves at a constant velocity. This tells us that an object has a property that is not changed, unless, there is an external force acting upon it. An object at rest can also be considered as an object having null velocity. In relativity, the inertia of an object tends to be infinity when the speed of the object reaches the speed of light. Hence an infinite force is required to increase the current velocity. It can be proved that no mass can reach the speed of light.
What is the difference between momentum and inertia?
- Momentum is a physically calculable property, while inertia cannot be calculated using a formulae.
- Inertia is just a concept to help us understand and define mechanics better.
- While, momentum comes in the forms of linear momentum and angular momentum, the inertia comes only in one form.
- Momentum is conserved in some cases. Momentum conservation can be used to solve problems. Inertia doesnt have to be conserved in any case.
...and nothing describes the difficulty of stopping or starting federal programs like the term "bureaucratic inertia"!
How about....
ertia = moving
inertia = not moving
ertia minor = moving just a little
Thanks...and don’t forget to tip the waiters.
ertia = moving
inertia = not moving
ertia minor = moving just a little
I'll have to add that to my dictionary of useful terms...
Just as soon as I get a...
Round Tuit
Right now I need to get "ertia minor" and go cook some breakfast. Thanks!
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