CK-12-Physics-Concepts - Intermediate

http://www.ck12.org Chapter 7. Momentum

a. garbage truck.

b. butterfly.

c. it is the same for both.

7. A rifle recoils from firing a bullet. The speed of the rifle’s recoil is small compared to the speed of the bullet
   because

a. the force on the rifle is small.

b. the rifle has a great deal more mass than the bullet.

c. the momentum of the rifle is unchanged.

d. the impulse on the rifle is less than the impulse on the bullet.

e. none of these.

• Law of Conservation of Momentum:The total linear momentum of an isolated system remains constant
  regardless of changes within the system.