B Class Problem 15 - 2.01s Jo - 20.4 m 40- -9.80 m/s' 18-0 5) A stone thrown from the top of a building is given an 1 20.0 m/s initial velocity of 20.0 m/s straight upward. The stone is 64-9.80 m/8 C 1 = 108 s 10 - 0 launched 50.0 m above the ground, and the stone just misses A -20.0 m/s 40 -9.80 m/s' the edge of the roof on its way down as shown in the figure. (A) Using A = 0 as the time the stone leaves the thrower's hand at position A, determine the time at which the stone reaches its maximum height. D 10 - 5.00 s 50.0 m 19 -225 m (B) Find the maximum height of the stone (above its initial 40-29.0 m/s 40- -9.80 m/s' position) (C) Determine the velocity of the stone when it returns to the height from which it was thrown. 1 = 5.83 s (D) Find the velocity and position of the stone at / = 5.00 s. Jo -50.0 m E 40 -37.1 m/s 40- -9.80 m/s