An object's position is given by: Z(t) = 100t 202 ft. Find the velocity when the object's position is 120 ft. To do this: set the position: Z(t) = 120 YR (o - plug t into the velocity (1st derivative) equation Ch ne 1 point 2 I vel = 4+ 20 o O - vel =4+ 14.14 8 vel =4 22.2 I )