Recent content by physicsjessic

Homework Statement Two cars collide at an intersection. car A with a mass of 2000 kg is going from west to east while car B of mass 1500 kg is going from north to south at 15 m/s. As a result of collision the two cas move together as one after. The cars now move at an angle 65 degrees south of...

Homework Statement A rifle has amass of 4.5 kg and it fires a bullet of mass 10 g at a muzzle spped of 820m/s what is the final recoil speed of the rifle as the bullet leaves the gun barrel? Homework Equations conservation laws The Attempt at a Solution 4.5v=1000*820 v=1.8*10^5