A projectile is fired horizontally from a gun that is 47.0 m above flat ground, emerging from the gun with a speed of 250 m/s.
(a) How long does the projectile remain in the air?
s
(b) At what horizontal distance from the firing point does it strike the ground?
m
(c) What is the magnitude of the vertical component of its velocity as it strikes the ground?
m/s