Equations of motion modification consistent with conservation of momentum, see variable-mass system. It may be simple to write down the equations of motion in vector form using Newton's laws of motion, but the components may vary in complicated ways with spatial coordinates and time, and solving them is not easy. Often there is an excess of variables to solve for the problem completely, so Newton's laws are not always the most efficient way to determine the motion of a system. In simple cases of rectangular geometry, Newton's laws work fine in Cartesian coordinates, but in other coordinate systems can become dramatically complex. The
Gravity: Original Motion Picture Soundtrack Gravity: Original Motion Picture Soundtrack Gravity: Original Motion Picture Soundtrack is the soundtrack album of the 3D science fiction thriller film "Gravity", written by British film composer Steven Price. The album was released in 2013 via WaterTower Music label. Price's score was universally applauded by film critics and audiences alike, leading Price to win and receive nominations for several Best Original Score awards at ceremonies, including a BAFTA Award, a Satellite Award and an Academy Award, as well as a Golden Globe Award nomination. Composer Steven Price was originally called in to help out for three weeks on the music