Momentum And Collisions

Question 1

Momentum

Answer 1

p= mv

Question 2

Impulse

Answer 2

p= Fnet (t)
p= p2-p1
sumF (t)= mv2 - mv1
from a graph, impulse is area under it

Question 3

Law of conservation of momentum

Answer 3

If Fnet of a system is zero, then the linear momentum of the system before is equal to the linear momentum after.
p [before] = p [after]

Question 4

Elastic Collision

Answer 4

p=p’

Ek=Ek’

Question 5

lnelastic Collisions

Answer 5

p =p’
Ek > Ek’
If objects ‘stick together’ at the same velocity it is called a completely IE collision. Most collisions are IE because at least some of the energy is lost to heat, sound, light, etc.