. A ball is thrown downward at a speed of 20 m/s. Choosing they axis pointing up and neglecting air resistance, which
equation(s) could be used to solve for other variables? The
acceleration due to gravity is 8 = 9,8 m/s? downward.
(a) v = (20 m/s) - gt.
(b) y = y + (-20 m/s): - (1/2)grº.
(C) 0 = (20 m/s) - 28(y - Yo).
(d) (20m/s) = (v + 2)/2
(e) All of the above.