A few nights ago I was riding home on my bike. I was going slightly down hill and had a good head of steam, I'd estimate my speed about 10-15 mph. I'm on the bike path which is parallel with the road but separated by a row of oak trees about 30-40 feet tall. There I am minding my own business, when an evil acorn falls from the tree and hits me in the top of my head. So here's the question, does it hit me harder because I'm moving on a bicycle or would it hurt just as much if I had just been standing there????