The matter or space that a wave travels through is always known as a...

The passing of heat through a material while the material itself stays in place. a. radiation b. conduction c. convection

Emmy kicks a soccer ball up at an angle of 45° over a level field. she watches the ball's trajectory and notices that it lands, two seconds after being kicked, about 20 m away to the north. assume that air resistance is negligible, and plot the horizontal and vertical components of the ball's velocity as a function of time. consider only the time that the ball is in the air, after being kicked but before landing. take "north" and "up" as the positive ‑ and ‑directions, respectively, and use ≈10 m/s2 for the downward acceleration due to gravity.

When flexing to a reflective style, one should be specific, brief and to the point, and maintain a fast and decisive pace?