Suppose you increase your walking speed from 5m/s to 14m/s in a period of 1 . what is your acceleration?

Iwill give brainliest if you answer right : )

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.

Which is a substance that can be separated by physical means and is not the same throughout