If an arrow is shot upward on the moon with a velocity of [math] m/s, its height (in meters) after [math] seconds is given by [math].

(a) Find the velocity of the arrow after one second.
(b) Find the velocity of the arrow when [math].
(c) When will the arrow hit the moon?
(d) With what velocity will the arrow hit the moon?

(a) [math] m/s
(b) [math] m/s
(c) [math] seconds
(d) m/s