Ch. 7 - Momentum Flashcards
1
Q
it means inertia in motion -
A
momentum
2
Q
momentum is a ….
A
vector
3
Q
the quantity of force applied over a certain amount of time -
-also the change in momentum
A
impulse
4
Q
best way to change momentum of an object is to ……
A
add force
5
Q
best way to decrease momentum is to ….
A
apply force
6
Q
what is the conservation of momentum -
A
the momentum of a system before an event must equal the momentum after the event
7
Q
when the net force on a system is zero, the momentum ……..
A
does not change
8
Q
momentum will be conserved in all cases, ….. may not be
A
KE
9
Q
when KE is conserved collision is -
A
elastic
10
Q
when KE is lost, collision is -
A
inelastic
11
Q
the lost energy is transformed into other forms of energy such as …..
A
sound, deformation,thermal
