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## Homework Statement

In 1453, during the seige of Constantinople, the Turks used a cannon capable of launching a stone cannonball with a mass of 5.40 X 10^2. Suppose a soldier dropped a cannonball with this mass while trying to load it into the cannon. The cannonball rolled down a hill that made an angle of 30 degrees with the horizontal. If 5.20 X 10^4 J of work was done by gravity on the cannonball on the cannonball as it rolled down a hill, how far did it roll?

## Homework Equations

W=Fdcos(30)

## The Attempt at a Solution

d=W/Fcos(30)

F=ma

d=W/macos(30)

d=(5300)/(540)acos(30)

What am I doing wrong?