Would it be faster or slower if you fired it down or up? The acceleration due to gravity is perpendicular to the bow acceleration when fired horizontally, no?
A 0.062 kg arrow is fired horizontally. The bowstring exerts an average force of 65 N on the arrow over a distance of 0.75 m. With what speed does the arrow leave the bow?
need in m/s
is this just a simple equation problem, to find velocity?
or F = mass * acceleration?
or just need to find velocity?
the part that says horizontally, is confusing me.
You can do it this way, though I suspect you are now learning about the Work-Energy Theorem.
The work done is simply since the force and displacement are in the same direction. since the initial speed of the arrow is 0 m/s. Thus
Note: Here I am using a constant F. In simple cases we can get away with using an average force as a constant force over a time interval. (Perhaps in all cases. I'm trying to be conservative as I'm too tired to think through details right now.)
-Dan