c and this product of the mass into the velocity of a body is called its momentum, moving force, or quantity of motion."Fi*st Principles of Philosophy, Silliman, Philadelphia, 1859, p. 81.

Save guides, add subjects and pick up where you left off with your BBC account. When two objects collide the total momentum before the collision is equal to the total momentum after the collision ...

The principle of momentum investing—though contrary to the traditional wisdom of buying low and selling high—suggests that investors can profit by buying rising stocks and selling them before ...

The total momentum before is zero so by the law of conservation of momentum the momentum after the ball is fired is also zero.