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DarkBASIC Professional Discussion / Physics Routines

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Rodro
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Posted: 6th Oct 2002 06:22
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Can anyone tell me where I can get routines in basic or even mathematical equations of physics (I.E. Gravity, Velocity, acceleration, etc.). I can convert them into DBPRO but I don’t know the math.

Thanks.
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Excalibar
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Posted: 6th Oct 2002 06:56
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Constant Velocity:
X=Xo+VT
Constant Acceleration:
V=Vo+AT
X=Xo+VoT+(1/2)A(T^2)
(V^2)=(Vo^2)+2A(X-Xo)

X=Final X position
Xo=Initial X position
V=Final velocity position
Vo=Initial Velocity
A=Acceleration
T=Time

Need more explanation or more equations then post an another request.

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Excalibar
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Posted: 6th Oct 2002 06:57
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Gravity = 9.8 m/s^2 (acceleration)

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Rodro
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Posted: 6th Oct 2002 07:17
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What is the m & s in the Gravity Equation?

Thanks!

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Excalibar
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Posted: 6th Oct 2002 07:38
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m=meters
s=seconds

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VietStylist
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Joined: 20th Sep 2002
Location: Australia
Posted: 6th Oct 2002 12:28
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Newtons 2nd Law
F=ma

F=Force
m=Metres (not meters )
a=Acceleration

Einstein's Law
F=mc^2

F=Force
m=Mass
c=Speed of light

I know more but I forgot.

Vs

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Zero
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Joined: 28th Aug 2002
Location: Finland
Posted: 6th Oct 2002 13:38
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non-bouncing collision
m1v1+m2v2=(m1+m2)u

m1=mass 1 (kilos)
v1=velocity 1 (can be negative) in meters per sec OR kilometers per hour
m2=mass 1 (kilos)
v2=velocity 1 (can be negative) in meters per sec OR kilometers per hour

u is the new velocity that can be also negative (depending the collision)
u=(m1v1+m2v2)/(m1+m2)

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The Darthster
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Joined: 25th Sep 2002
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Posted: 6th Oct 2002 23:18
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Gravitational force = (G * m1 * m2) / r^2

where G is the gravitational constant (6.67e-11 Nm^2kg^-2 but this can be altered to produce the 'right' effect)

m1 and m2 are the masses of the objects and r is the distance between them. Then you can use

Force = mass * acceleration

to find the acceleration, change the velocity by the acceleration and change the position by the velocity.

Also:
v = u + a*t
v^2 = u^2 + 2*a*s
s = ut + 0.5*a*t^2

where:
u=initial velocity
v=final velocity
s=distance
a=acceleration
t=time
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Milamber
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Posted: 9th Oct 2002 12:48
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Einstein's law is E=mc^2 not F=mc^2. There is a difference.

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deadlyduck
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Posted: 9th Oct 2002 14:52
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Gravity is not a force the Earth Sux :p
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The Darthster
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Posted: 9th Oct 2002 17:47
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I meant on a planet-sized scale. For Earth's surface gravity use yvel#=yvel#-(9.8/time in seconds).
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Milamber
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Posted: 11th Oct 2002 20:08
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Get a physics book that you used in science at school. It should have all the basics in it.

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