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 it received a nomination for Best Original Score at the 71st Golden Globe Awards and won Best Original Music at the 67th British Academy Film Awards and Best Original Score at the 86th Academy Awards. James Southall of Movie Wave awarded the album five stars out of a possible five and said that "it feels like the most intelligent and most satisfying score for a science fiction movie since Ennio Morricone's stunning, dishearteningly lambasted "Mission to Mars"." Notes Credits adapted from AllMusic and from the liner notes of "Gravity: Original Motion Picture Soundtrack". Gravity: Original Motion Picture Soundtrack Gravity: Original