Conservation+of+Momentum

__//Definitions//__
An elastic collision is when two objects collide and then bounce off each other. -jyi23 This is something that occurs in a game of pool. - elagan Inelastic collisions are when two objects collide and move together as one mass. -rqureshi9 When momentum is conserved, it means that the net momentum is the same-mliguori in a closed system, the total momentum always remains the same. Conservation of Momentum--&gt; Before and after two isolated objects collide, the change in momentum between the two will always result in the original momentum of the system. -alutz

In elastic and inelastic collisions, the momentum was conserved. An impulse is defined as the integral of a force with respect to time. - koolkosmo1

Momentum is conserved in both in elastic and elastic collisions.-jyi23 Impulse is force times the change in time.-amedina23 Change in time can only be positive or zero, even if the time is decreasing.-Mliguori Momentum is the product of an objects mass and its velocity. –jyi23 Momentum is a vector quantity that has direction and magnitude. ibabicz Negative momentum just means the object is moving in the opposite direction-mliguori Momentum: the quantity of motion of a moving body. -KatlynB P = m * V _kquigley In a “perfectly” elastic collision, the total momentum and the total kinetic energy remain constant. _kquigley Conservation of Momentum: m1v1 + m2v2 = m1v1 + m2v2 -beckym09

__//Pictures//__
- KatlynB

ango rqureshi _kquigley ibabicz _kquigley PatMcCaughey jfbutler91

 the laws of momentum are also important in boxing, the force someone puts behind a punch or the use of ropes to divert momentum because energy can not be destroyed so boxers use ropes. also the requirement of gloves decrease force and increase time of a landed punch there is also momentum laws invovled with boxing. requirements to - aforman

there is also momentum laws invovled with boxing. requirements to - aforman beckym09

Example of conservation of momentum -bandrews

Complex equation explaining the conservation of momentum -bandrews

//__Examples out in the world, or real applications of Conservation of Momentum__//
Crochet- a ball hits another ball of the same mass that is at rest and stops while the second ball starts to move. -amedina23 Billiards- If the correct amount of force is applied to the cue ball, the ball will transfer all of its energy to another ball, which heads toward the pocket.-koolkosmo1 Tennis - the player hits the ball with the racquet and the ball hits the other court with the momentum depending on how hard the player hit it -ango When a skate boarder hits a bump on the sidewalk. –jyi23 When a small football player gets hit by a bigger football player and the smaller player gets moved back and the bigger player's velocity decreases. Dave s. Newton’s Cradle- when a metal ball hanging from a string strikes the other balls, the ball on the other side pops out. jfbutler91 When a pinball is sprung forward by the machine. The spring stops and the ball is propelled forward.- PatMcCaughey When a painball is shot from a paintball gun, momentum is conserved as a whole. - elagan

__//Problems//__:
Which requires more work to stop--a light truck or a heavy truck, both moving at the same momentum?

If two objects of equal weight collide, what is the result? - elagan The two objects will transfer their momentum to each other. If one is at rest and one is moving, the one that is rest will move at the momentum the other was initially moving at, and the one that was moving will come to rest. -ango

The heavy truck requires more work to stop because the heavy truck has more mass. -jparadis11

a heavy truck because it has more mass

a heavy truck - blim a heavy truck because it is heavier. -amedina23 a heavy truck because it has a greater mass- koolkosmo1 a heavy truck because it takes more energy to stop the truck that has more mass -mflosdorf a heavy truck because its heavier so you need more energy to stop it -sejalP The heavy truck because the speeds of the two trucks remain constant; only the weights differ so the larger truck would need more energy to stop since it has a greater mass. Dave S. The heavy truck because it takes more of an impulse to stop the heavy truck than a light truck. ibabicz a heavy truck requires more work to stop because it has more mass. -beckym09 A heavy truck!!! -bandrews It depends. If in outer space both would be fairly easy to stop. On earth a truck with more mass would be harder to stop because of the amount of force the brakes would have to put on per pound of the truck. jfbutler91 __....................................................................................................................................................................................................__ If a moving object doubles its speed, how much more momentum does it have? How much more energy does it have? How much more impulse does it provide to whatever it bumps into? How much more work does it do as it is stopped?

If its speed is doubled, the momentum is also doubled. For example, an object with a 50g mass and a 2m/s velocity has a momentum of 100. When the velocity is doubled, the momentum is 200. PatMcCaughey

__....................................................................................................................................................................................................__ Suppose a ball of putty moving horiontally with 1 kg m/s of momentum collides and sticks to an identical ball of putty moving vertically with 1 kg m/s of momentum. Why is their combined momentum not simply the arithmetic sum, 2 kg m/s?

Because the two objects are going in different directions, and momentum is a vector quantity, which takes into account the direction. -KatlynB

After the collisio

because you need to add the two together because they are moving in the same direction