You can throw me, I will fly. Throw me the right way, I'll get nice and high. The more weight the worse, the less weight the better. I can be made of light material, try a letter.
What am I?
A paper airplane.
I am an agreement.
Change one letter and I am a large vehicle.
Remove one letter and I am a fold of material.
Change another letter and I am a mark of correctness.
Change one final letter and I am a pointed tool.
What was I and what did I become?
Sometimes I fly as fast as the speed of light. Sometime I crawl as slow as a snail. Unknown until I am measured but you will certainly miss me when I’m gone. What am I?