Roxy asked:
A water pistol aimes horizontally projects a stream of water with an initial speed of 5m/s.
a) how for does the water drop in moving 1m horizontally?
b) how far does it travel before dropping a vertical distance of 1cm?
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The horizontal motion is independent of the vertical motion.
It takes 1/5 sec to move 1 m and the dist = 1/2 g t^2 where g = 9.8 m/s^2
dist = 0.196 m
and conversely
1 cm = 1/2 g t^2 = or t = root(0.02/g) = 0.04517 sec
d = 0.04517 * 5/m sec = 0.22587 m