What is time? Any how can you prove it exists? ?

Question

This is my homework for AP world history. I need help. What do you think the answer is?

Answer 1

http://en.wikipedia.org/wiki/Time

Answer 2

Time is a step from past to present

to future,  can't be changed.  A clock

is a means of measuring time.

Early examples of a clock was the

sun, candles, and/or oil lamps.

Clepsydras or water clocks were

one of the first keepers of time.

Answer 3

Time is a state of mind.

Answer 4

Time is a measurment, it exists as a tool that we use to better understand our world.

Answer 5

Time is being able to change.

As a human grows, its not something

that will cease.

Even a corpse grows, by rotting continously.  

Answer 6

time is what keeps everything from happening at once.  I can prove it exists by slapping you in the face, and then kneeing you in the crotch a few seconds afterwords, and therefore demonstrate that the two events did not happen at once.