Aball is dropped from a cliff and falls a distance of 20 m to the ground. determine the velocity it hits the ground at and the time for the ball to fall. a. v = -10 m/s, t = 2 s b. v = 20 m/s, t = 4 s c. v = -20 m/s, t = 2 s d. v = 10 m/s, t = 2 s

(1 point) match the differential equations and their vector valued function solutions. you may wish to multiply at least one solution out fully, to make sure that you know how to do it. you can get the other answers quickly by process of elimination and just multiply out one row element.