(pulsing music) – So how’d it go? Hopefully you saw how increasing the release height of the marble increased its velocity and resulted in an increase in momentum. So now you realize that momentum has two variables to it. It’s the product of the mass and the velocity together. It also helps you answer that crash question, where an 80,000 pound big rig that’s traveling two miles per hour has the same momentum as a 4,000 pound SUV traveling 40 miles per hour. In either case, that’s a lot of momentum.