The satellite’s orbital radius is 6.7×1 0 4 km and its speed is 2.0×1 0 5 m/s. What is the mass of the planet around which the satellite orbits? (G = 6.67×1 0 −11 N· m 2/k g 2

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.