A cannon mounted on a pirate ship fires acannonball at 125 m/s horizontally, at

Question

A cannon mounted on a pirate ship fires acannonball at 125 m/s horizontally, at a height of 17.5 mabove the ocean surface. Ignore air resistance. (a) How much timeelapses until it splashes into the water? (b) How far from the shipdoes it land?
(a) s
(b) m (a) s
(b) m A cannon mounted on a pirate ship fires acannonball at 125 m/s horizontally, at a height of 17.5 mabove the ocean surface. Ignore air resistance. (a) How much timeelapses until it splashes into the water? (b) How far from the shipdoes it land?
(a) s
(b) m

Explanation / Answer

a) the time for the cannonball is fall vertically 17.5 into theocean is t, and S=17.5m = (1/2)gt2 t = (2*17.5m/9.8m/s2) = 1.89 s b) horizontal distance D = v*t = 125m/s*1.89 s = 236.25m t = (2*17.5m/9.8m/s2) = 1.89 s b) horizontal distance D = v*t = 125m/s*1.89 s = 236.25m

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