Force, Motion, Energy

Hey guys so we started a new unit in science class is about the forces of motion, and they are to things which i have to answer, What i know and what I want to know.
So the thing that I know is that in order to move something you need force {like a bullet hitting a soda can, or a punch.} Motion {like a car.} and energy {which can go with the car and with the punch.} The other thing which i know is that if you go at the speed of light which means that you can trick gravity you start to get heavier and heavier until at one point you stop because you get to heavy.
The thing that i would like to know is if you have enough energy and motion could you run on water, and how do stay on the surface of the water and not sink
I research one of my questions which was how do boats not sink and stay on the surface of the water, this is because the boats positive force is pulling down while the seas negative forces is pushing up. The guy who found out this theory is not with us anymore but still is very cool.Hes called Archimedas

Link where i got my info
http://www.boatsafe.com/kids/021598kidsques.htm