The first matter were sub-atomic particles (particles smaller than an atom). it was unstable and violent.
what were the two types of sub-atomic particles?

If a sphere and a cure have the same mass and are propelled up a ramp with the same force, which would travel father up the ramp? explain.

Apebble is thrown into a calm lake, ripples are formed from the center and move outward. the water particles in the lake travel in a circular pattern that moves up and down on the surface of a lake, and the energy travels a) diagonally. b) downward. c) horizontally. d) upward.

Gordon is going for a run through the park, but it is cold outside. the low outside temperature could affect his personal safety.