2.4 momentum Flashcards
1
Q
P = mV
A
Momentum (in kgms^(-1))=mass*velocity
2
Q
Elastic collision
A
A perfectly elastic collision is defined as one in which there is no loss of kinetic energy in the collision
3
Q
Inelastic collision
A
Loss of kinetic energy in - if they stick together
4
Q
m1u1 + m2u2 = m1v1 + m2v2
A
Elastic collision, one object impacts another and the momentum & energy is conserved. If v1 and v2 are unknown, we can make a second equation with
1/2m1u^2+1/2m2u2^2=1/2m1v1^2+1/2m2v2^2
5
Q
E_k = p^2/2m
A
Calculating kinetic energy from momentum squared over 2*mass
6
Q
Ft=p
F=Δp/Δt
A
Force * time = momentum
7
Q
Define impulse
A
Δp, change in momentum
