Forum: Bryce


Subject: geometrical question?

airflamesred opened this issue on Jun 15, 2002 ยท 14 posts


Rayraz posted Mon, 17 June 2002 at 2:14 AM

Fz=M*G

Fz=gravitation in Newton (or in dutch zwaartekracht)
M=mass in Kilogramms
G=acceleration in m/s^2 (meter per sec^2) on earth the accelleration is 9.81 m/s^2

I Don't know the exact air/wind-resistence formula.
The energy of an object at a certain height is given with this formula:
Eh=MGh

Eh=heightenergy in Joule (and Joule is Newton per second)
G=gravitational accelleration (9.81 m/s^2)
h=Height in meter.

The energy of an object at a certain movement is given with this formula:
Ek=0.5mv^2

Ek=kinetic energy in Joule.
m=mass in kilogramm
v^2=(speed in meters per sec (m/s))^2

For throwing a ball horizontally you need these formulas:
Sx(t)=vt and Sy(t)=0.5g*t^2

Sx(t)=the length of the horizontal component of the objects movement over the time t. Here Sx= in meter and t= in sec.
V=speed of the object
t=time in sec

Sy(t)=the length of the vertical component of the objects movement over the time t. Here Sy= in meter and t= in sec.
G=9.81 m/s^2 (on earth)
t^2=(time in sec)^2

I hope this helps

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