Momentum Flashcards
1
Q
Momentum
A
p=mv
2
Q
Unit of Momentum
A
Newton*second
3
Q
Newton’s 2nd Law in terms of momentum
A
Net Force=(change in p)/(change int t)
4
Q
Impulse
A
J=pf-pi
=F*t
5
Q
Law of Conservation of Momentum
A
If no external forces, p total,initial=p total,final
6
Q
If net force is 0
A
momentum (p) is constant
7
Q
Elastic collison
A
KE before and after a collison are the same
8
Q
Inelastic collison
A
KE before and after the collison are different
9
Q
Completely inelastic collison
A
Colliding things stick together
10
Q
Equation for Conservation of Momentum
A
MaVa+MbVb=MaVa’+MbVb’
11
Q
Conservation of Kinetic Energy
A
Ktotal,initial=Ktotal,final
1/2MaV^2a+1/2MbV^2b=1/2Ma(Va’)^2+1/2Mb(Vb’)^2
12
Q
If a collison is Elastic
A
Use conservation of Momentum or Kinetic Energy Equation
