The moon Phobos orbits Mars (m = = 6.42 x 1023 kg) at a distance of
9.38 x 106 m. What is the Phobos'
orbital velocity?

[?] m/s

Which feature of a heating curve indicates a change ofn state

Which accurately compares concave and convex lenses?

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.