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Myst · 04-27-2005, 07:30 AM

A train is approaching you at 30m/s
The train conductor shines a flashlight at you and throws a ball at you, speed of the light is 3x10^8m/s, speed of the ball is 10m/s

what is the apparant speed of
a) the ball
b) the light

from your perspective?

the ball speed is 40m/s
the light speed is still 3x10^8 m/s (not 3x10^8 m/s + 40m/s)

back to work!

04-27-2005, 07:30 AM
Myst Confirmed User Join Date: Feb 2004 Location: Alberta, Canada Posts: 4,707	A little physics thing to think about A train is approaching you at 30m/s The train conductor shines a flashlight at you and throws a ball at you, speed of the light is 3x10^8m/s, speed of the ball is 10m/s what is the apparant speed of a) the ball b) the light from your perspective? the ball speed is 40m/s the light speed is still 3x10^8 m/s (not 3x10^8 m/s + 40m/s) back to work! __________________ ICQ: 298-523-037 Last edited by Myst; 04-27-2005 at 07:32 AM..