The rod of the fixed hydraulic cylinder is moving to the left with a speed of 114 mm/s and this speed is momentarily increasing at a rate of 470 mm/s each second at the instant when sa = 395 mm. determine the tension in the cord at that instant. the mass of slider b is 0.57 kg, the length of the cord is 1052 mm, and the effects of the radius and friction of the small pulley at a are negligible. find results for cases (a) negligible friction at slider b and (b) μk = 0.42 at slider b. the action is in a vertical plane.

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.