Sebuah bandul diletakkan diatas sebuah balok yang berada didalam air (ρ a = 1000 kg/m 3 ). Massa bandul maksimum yang dapat ditampung oleh balok tersebut jika balok bermassa 50 kg dan memiliki volume 10.10^-2 m3 .

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.