At t=0 a ball is thrown straight upward from the ground level at speed vo. at the same instant, a distance d above, a ball is thrown straight downward, also at speed vo.

where do the balls collide in terms of d, vo, and g?

Do you agree with scientist’s prediction about the warming of alaska and other polar regions?

To a of 4 x hz is 1. 0. mm nm nm

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.