A pendulum is made by attaching a sphere to the end of a string of negligible mass and it oscillates when released from an angle of 10 degrees from the vertical. In a second experiment, a sphere with a greater density is attached and released from the same angle. How do the period (T), maximum kinetic energy (Kmax),and the maximum acceleration (a max)of the second pendulum compare to the first? *

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.