Can speed and time determine size

I awoke from a dream this morning pondering a few questions that i couldn't get my head around. I'm not a scientist or work in the industry, just a keen interest in it so forgive my layman approach to this subject.

Through lack of articulation ill just give you my questions and answers as i thought of them:

Q, How long would it take to walk a piece of rock?

A, It would depend on the size of the rock.

Q, If the rock is a mile long how long would it take me?

A, It depends on the speed.

So then i put the speed of light and a fixed time in to the equation, bare with me.

If the size to be traversed was the size of a grain of sand and the object was traveling the speed of light and it took that object an hour to reach one end to the other then the object should be infinitesimally small ?

but if the distance to be traveled was greater than light can travel in an hour then the size of the object could be any size?

Re: Can speed and time determine size

Quote:

Originally Posted by **JAYSFLUID**

...So then i put the speed of light and a fixed time in to the equation, bare with me.

If the size to be traversed was the size of a grain of sand and the object was traveling the speed of light and it took that object an hour to reach one end to the other then the object should be infinitesimally small ?

but if the distance to be traveled was greater than light can travel in an hour then the size of the object could be any size?

I'm afraid your question is a bit too muddled to make any sense out of it.

1) What equation are you proposing?

2) What is the object that's traveling at the speed of light? Is it the grain of sand you mention?

3) You say "...it took that object an hour to reach one end to the other...". --- One end to the other of what?

The only part of your post for which there's even a hope of an answer is your last question:"...if the distance to be traveled was greater than light can travel in an hour, then the size of the object could be any size?..."

If "...the distance to be traveled..." is taken to mean the diameter or the length through one axis of the object, then the answer would be no, the object could **not** be any size. The object would have to be greater than the distance a photon can travel (in a vacuum) in an hour - which would be (approximately):

Chris