# momentum and its conservation

mass

momentum is the product of an objects...................and velocity

impulse

the quantitiy Ft is called............

kgm/s

the unit of momentum in SI is..............

loss

any gain of momentum by an object occurs only by the..............of a corresponding amount of momentum by another object

impulse

the change of mementum for an object is equal to and caused by the .....................given to the object

m delta v

complete the equation Ft= ........

constant

in a system consisting of objects upon which no external foce is acting, the momentum of the system is.............

the total momentum afterwards

two objects of equal mass approach each other head-on with the same speed. the total momentum of the system before the collision take place equals...............

internal

a(n).............force cannot change the momentum of a system

direction

because both.................and magnitude must be taken into account when adding momenta, momentum is a vector quantity

negative

if the momentum of a cannon is considered positive after it fires a shell, the momentum of the shell is considered...............

20

a moving object containing a bomb explodes. if the object had a total of 20 units of momentum just before the explosion, its pieces would have a total of............... units of momentum just after the explosion

momentum

the product of a systems mass and its linear velocity

impulse

the product of the force exerted on a system and the time interval in which it occurs

impulse

equals the change in momentum

law of conservation of momentum

the momentum of a closed isolated system does not change

law of conservation of momentum

cannot be created or destroyed but can transfer from one system to another

law of conservation of momentum

based on newtons 3rd law of motion

collision

momentum is transfered during a ............

collison

when one system (object) runs into anothers path

collision

one or both have to be moving

interlock

system mass would be the sum of two

elastic

the two objects bounce after the collision so that they move separately objects...objects return to their original shape...work done to deform the object is equal to the work done to return it to its original shape...

perfectly elastic

KE is conserved

inelastic

objects deform during the collision suc that the total KE decreases but the onjects move separately after the collision...objects do not return to their original shap