Which scientists theory supported the general contents of the people and religious teachings of the time

What does si stand for,when referring to a system of measurement

Ben (55kg) is standing on very slippery ice when junior (25kg) bumps into him. junior was moving at a speed of 8 m/s before the collision and ben and junior embrace after the collision. find the speed of ben and junior as they move across the ice after the collision. give the answer in m/s. describe the work you did to get the answer.

The receptor cells that convert light energy into neural signals are called