posted by Rebecca on .
A water pistol aimed horizontally projects a stream of water with an initial speed of 5.00 m/s.
(a) How far does the water drop in moving 1.00 m hori-
(b) How far does it travel before dropping a vertical
distance of 1.00 cm?
(a) It takes
t = 1.00/5.00 = 0.2 seconds
to travel 1.0 meter horizontally.
Use the formula
(elevation change) = (g/2) t^2
(b) To fall 1.00 cm, the time required is
0.01 = (g/2) t^2
t = 0.0452 s
The horizontal distance traveled by the water in that time is