VI. Momentum Review Flash Cards

 1. In the diagram below, a 100-kilogram clown is fired from a 500 kilogram cannon. If the clown's speed is 15 meters per second after the firing, then the recoil speed (v) of the cannon is Answer: 2. The diagram shows a compressed spring between two carts initially at rest on a horizontal frictionless surface.       Cart A has a mass of 2 kilograms and cart B has a mass of 1 kilogram. A string holds the carts together. Compare the carts inertia Compare the carts momentum Compare the force on each car when they are pushed apart Compare the impulse on each car when they are pushed apart a) b) c) d) 3. The diagram below shows two carts that were initially at rest on a horizontal, frictionless surface being pushed apart when a compressed spring attached to one of the carts is released. Cart A has a mass of 3.0 kilograms and cart B has a mass of 5.0 kilograms. If the speed of cart A is 0.33 meter per second after the spring is released, what is the approximate speed of cart B after the spring is released? Answer

Momentum Review Flash Cards

 4. A 1.2-kilogram block and a 1.8-kilogram block are initially at rest on a frictionless, horizontal surface. When a compressed spring between the blocks is released, the 1.8-kilogram block moves to the right at 2.0 meters per second, as shown. What is the speed of the 1.2-kilogram block after the spring is released? Answer Momentum is conserved in a closed system. (Total Momentum before = Total Momentum _____) Answer A wooden block is at rest on a horizontal steel surface. If a 10. Newton force applied parallel to the surface is required to set the block in motion, how much force is required to keep the block moving at constant velocity? (1) less than 10. N  (2) greater than 10. N (3) 10. N Answer If the speed of a moving object is doubled, which quantity associated with the object must also double? (1) its momentum   (2) its kinetic energy (3) its acceleration  (4) its gravitational potential energy Answer