i need to find the initial velocity, there is no acceleration involved i just can't find any equation that would work
the best one I've found is v^2= (kx^2)/m but i can't find k from the info i have so I am stuck. if i had k then i could solve this problem.
Homework Statement
A bullet with a mass of 1.5g is fired from a gun with an initial force of 500 N over 20m
Find the initial velocity of the bullet as it leaves the muzzle.
Homework Equations
m=1.5g, F=500N, d=20m
The Attempt at a Solution
i can't seem to find the equation...
An arrow with a mass of 90g is fired from a bow whose string exerts an average force of 125 N on the arrow over a distance of 74 cm.
so: m=90g=.090kg, F=125N, d=74cm=.74m
Then find the initial velocity of the arrow as it leaves the bow.
i can't seem to find the equation that would fit...