From a balcony, a ball is thrown vertically upward. Three seconds later, its velocity is observed to be 14m/s downward. Taking upward as positive and g=10m/s2, determine the ball’s initial velocity at the instant it was thrown.
(a) 44m/s upward
(b) 16m/s downward
(c) 16m/s upward
(d) 44m/s downward