Utopian Enforcer Cannon is a multi-cannon ?

Fen Harel

Fen Harel
Darth Ender said:
thrusters apply a force, this changes acceleration and this is what is constant forever until a new force is applied to change it. The velocity of your probe is going to increase ...though it will have a force of gravity and stellar winds and such acting upon it. unlike the game which doesn't take any of that into consideration anyway.
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Exactly. Thrusters provide a force for a ship while they are being fired. Projectiles don't have thrusters. Once they are fired, that is it.

Of course none of this gets to the main point of the OP's thread - the merits of the Utopian Cannon, to which I have no opinion.
 

Smauler

S
Darth Ender said:
I can put it maybe in a simpler way you'd understand.

If i do a burn in my ship and lets pretend i'm way out in deep space away from any strong gravity. If i do a timed burn of my thrusters my velocity will increase from 0 and continue to increase. If i do a burn in the opposite direction equal to the first regardless of how long i wait, I will bring my acceleration to 0. My velocity will be fixed at whatever it was when i did that reverse burn. To get my velocity down to 0 i'd have to do a burn to create a force that provides a negative acceleration and then a counter burn once my velocity reaches 0 to stop the negative acceleration.

That's how real space travel works.
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That's not how our understanding of current physics works, let alone how "real space travel" works. That's Newtonian, and while I am glad you know Newtonian laws, there have been a few people who might have disagreed since. Space time would be your first check.
 

Chaodiurn

Chaodiurn
I'm confused: I always thought the heat from the PA only is a sideeffect from the primary production of mechanical energy by the fusion of gas helium and liquid deuterium: acceleration? So the PA-shells should accelerate slower after leaving the barrel since the main reaction is finished and only the left educts continue to react, adding further, but lower, acceleration?
 

CMDR Endincite

CMDR Endincite
Darth Ender said:
seriously. Acceleration is constant ... IT IS CONSTANT. Velocity is not. VELOCITY IS NOT CONSTANT.
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You are perhaps the most adamant purveyor of made up physical laws I have yet seen. Or simply a troll. Acceleration is not constant, nor can it be, as it is defined as a rate of change (delta-V) - a change that requires force; force requires energy, and energy cannot be infinite. This is ridiculous and should be closed - grade school physics covers this.
 
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Tulkas97

T
Fen Harel said:
According to this logic, the Voyager probes which were launched in the late 70s remain under acceleration, and thus their speed will continue to increase until they are close to the speed of light.
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Going by Darth's logic it would have taken far less time than 9 years for the New Horizons probe to get to Pluto. Hell we'd have probes in Alpha Centauri by now.:D
 

AveMe

AveMe
Tulkas97 said:
Going by Darth's logic it would have taken far less time than 9 years for the New Horizons probe to get to Pluto. Hell we'd have probes in Alpha Centauri by now.:D
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going by Darth's logic it's possible to travel faster than light!
hmm... We'd have probes in sagittarius A* by now :cool:
 
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Vincent Starson

V
Dang, we usually agree on most things but here you're wrong. Acceleration does not increase in vacuum, as many have stated. You should ask this thread to be closed and start a new one because your complaints about the gun being terrible is more valid than the flawed physics understanding on the first page of this post.

Cheers.
 

Draxxen

Draxxen
Riktar said:
I get that a projectile will continue to increase its speed if it has a constant force acting on it. IE: As long as a missile's engine continues to burn/fire it will continue to accelerate. But once the engine stops, so does the acceleration, no?

So,,,,,

If an object's force of motion is generated by a singular force (IE: rifle shot, canon, etc.) does the rate of travel "peak" once the energy from the "launch" is used up?
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No, once the force to push it forward is ended, motion is stable as long as no other forces are applied.

And Newton stole his first law from Galileo, btw.
 
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Drink!

Drink!
I'll just leave this here.
"Velocity is the rate of motion in a specific direction."
-http://www.physics4kids.com/files/motion_velocity.html

"Speed is the rate of motion, or the rate of change of position. It is expressed as distance moved (d) per unit of time(t). Speed is a scalar quantity with dimensions distance/time. Speed is measured in the same physical units of measurement as velocity, but does not contain an element of direction. Speed is thus the magnitude component of velocity. Velocity contains both the magnitude and direction components."
"To accelerate an object is to change its velocity, which is accomplished by altering either its speed or direction"
-http://www.edinformatics.com/math_science/acceleration.htm

https://www.youtube.com/watch?v=b7VLGweUuzo

Simply put, velocity measures speed and direction. To change velocity, you need to accelerate/decelerate or change directions. To do that, something needs to act on the object.

So velocity is constant unless acted on.
 
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CaptainKremmen

CaptainKremmen
Smauler said:
Yeah.... you're closer to right, but not right. Bullets don't slow down because of friction, but because of air ram. If there was nothing in front of a bullet, and it only encountered the friction on its sides, it would continue almost forever.

Air ramming is most commonly seen with bicycle pumps (and that's why they get hot when used hard). It's also why objects on re-entry (like the space shuttle) get hot too.... nothing to do with friction.
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Quite true, thanks!
 

Ahriakin

A
Soooo, we have a complete (and aggressive) misunderstanding of Newton's Laws and something far more basic and controlling - The Law of Conservation of Energy. erm...Good job DE, your super projectiles will magically add energy to the universe, we're saved...kinda....erm...no.
 

Rhea

Rhea
Darth Ender said:
nobody here understands Newton's Second law. This makes me sad for humanity.


edit: i'll break it down for you.

kinetic energy is mass * velocity. (.5mv^2 to be exact)
Velocity is the differential of acceleration to time.

Acceleration to an object in the vacuum of space is constant unless a force acts upon it (this would be gravity, thrusters, another object colliding etc). Unlike the previous post, velocity is not constant, acceleration is.

So the longer my projectile is in space the higher the velocity is. Since the velocity is going to increase at the same acceleration for as long as it doesn't collide with something, the kinetic energy will increase.

A projectile weapon like a cannon should have it's weakest damage at point blank range. It's highest damage at whatever the furthest distance the game will register an impact (4km seems to be the upper limit). While it may be unreasonable to ask the game engine to render correct kinematic physics like ever increasing velocity of projectiles, it would be trivial to modify the damage the same way (but inversely) as it's done for energy weapons.
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I've seen people explaining it to you several times but it would seem you still don't get it, therefor I will add my bit to it. Look at your own formula. You say velocity in one sentence, and then you confuse it with acceleration in the next. Velocity is constant, acceleration is not. Acceleration not equal to zero would mean that your velocity is not constant. Please, I beg you, stop arguing about it... you just confused two things, no big deal.
https://en.wikipedia.org/wiki/Acceleration
https://en.wikipedia.org/wiki/Velocity
 
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