<p>A cannon shoots a projectile with a constant net force over its entire path. Mass m has an initial velocity of v.</p>
<p>Another mass of a mass of 2m will have what initial velocity?</p>
<p>It would be helpful if you provided the full text of the problem or a drawing if there is one. My best guess is that the initial speed of a body with mass 2m will be (1/2)*V because of the the second law written in impulse form F=m dV/dt.</p>