C5: On two
opposite cliffs two bullets are shot with the same initial speed at the same
time. One gun is pointing upward at an angle θ above the horizontal
(bullet U), the other downward at the same angle θ below the horizontal
(bullet D). Bullet U hits the water
(1)
earlier than bullet
D and with a greater speed
(2)
earlier than bullet
D and with the same speed
(3)
later than bullet
D and with a greater speed
(4)
later than bullet
D and with the same speed
(5)
at the same time
as bullet D and with the same speed