Posted by Amy on Thursday, October 28, 2010 at 8:41pm.
The captain sinks a ship located x distance away with a cannon located on the top of a cliff that is 65m high. if the cannon ball has a velocity of 55m/s and the captain sinks the ship, how far was the ship from the base of the cliff.
I got 731.5 meters. is that right?

Physics  MathMate, Thursday, October 28, 2010 at 10:33pm
ASSUMING the cannon direction was horizontal, and neglect air resistance.
Time to freefall 65m, t:
65 = ut+(1/2)gt²
u=0 (initial vertical velocity)
t=√(65*2/9.81)=3.64 s.
Horizontal distance = 3.64*ux
= 3.64*55
= 200.2m
Can you explain how you got 731.5m?

Physics  bobpursley, Thursday, October 28, 2010 at 10:34pm
I do not know in what direction the cannon was aimed, particularly, the elevation.
Assuming horizontal, and no one would shoot a cannon horizontal, but
time to fall 65m...
65=1/2 g t^2 or
t= sqrt 130/9.8= 3.64sec
distance horizontal= 55m/s*3.64 which is not your answer.
Answer This Question
Related Questions
 Physics  This is a projectile motion problem where I need to find the velocity ...
 AP Physics  Momentum One of those Civil War cannons is fired. The Cannon has a ...
 physics math science  A battleship fires a cannon to hit a pirate ship with ...
 Physics  1. A 0.50 kg ball is moving with a velocity of 8.0 m/s along a ...
 calculus  Suppose lighthouse A is located at the origin and lighthouse B is ...
 Science  A battleship fires a cannon to hit a pirate ship with velocity 200 m/s...
 AP Physics  22. a)You are a pirate working for Dread Pirate Roberts. You are in...
 Physics  A cannon ball is fired from ground level with a speed of 86.0 m/s at ...
 Physics  A cannon placed at the top of a 100.0 m high cliff fires horizontally ...
 Physics  Part 1 You are a pirate working for Dread Pirate Roberts. You are in ...
More Related Questions