If you walk toward a flat mirror at a speed of 3.2 meters per second, at what speed do you see your image moving toward you?
a. 3.2 meters per second
b. 0.6 meters per second
c. 6.4 meters per second
d. none of the above
According to the answer key, it's C, but I have no idea why. And fucking around in front of a real mirror isn't helping me understand either.
>>7980723
If you walk at 3.2 m/s, your image walks at -3.2 m/s, so relative to you, your image is moving towards you at (3.2 - (-3.2))m/s, or 6.4 m/s.
GODDAMN RACOON POSTERS GET OFF MUH BOARD
>>7980744
Ah. I was thinking in absolute terms measuring from the surface of the mirror. Ie the image is walking 3.2 towards the mirror.
Goddamn a lot of physics is about getting into the right frame of reference.
What if someone walks towards the mirror at 0.5c, and the mirror is moving away at 0.75c, what does an observer at rest right behind the moving person see in the mirror?
>>7980780
They don't see the mirror, the person is blocking it.
poor raccoon :(
>>7980787
Go project somewhere else, manlet.
>>7980795
I see that no one on /sci/ can take a joke...
You cant move faster than the speed of light moron.
Your image, though, which isn't an actual physical object, could move faster the the speed of light
>>7980843
Image can. Phase velocity n what not.
>>7980723
>According to the answer key, it's C
Yup. The correct answer is d. because the actual speed of the image (or the photons that make it up) is the speed of light C. It doesnt even matter what speed you move at. This is of course assuming that you are in a vacuum, which I will assume since the medium is not stated in the question.
>>7980800
Thanks for using a tripcode, now I can just filter your stupid comments
>>7980863
Uhh get the fuck off my board you fucking first year engineer.
