Apply Momentum Conservation to Collisions
Physics · Flashcards · Application
PHYSICS · FLASHCARDS
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QUESTION
Find
v
v
v
if
m
1
=
3
kg
m_1=3\,\text{kg}
m
1
=
3
kg
at
u
1
=
2
m/s
u_1=2\,\text{m/s}
u
1
=
2
m/s
sticks to
m
2
=
3
kg
m_2=3\,\text{kg}
m
2
=
3
kg
at
u
2
=
−
2
m/s
u_2=-2\,\text{m/s}
u
2
=
−
2
m/s
.
QUESTION
Find
v
v
v
if
m
1
=
1
kg
m_1=1\,\text{kg}
m
1
=
1
kg
at
u
1
=
8
m/s
u_1=8\,\text{m/s}
u
1
=
8
m/s
sticks to
m
2
=
3
kg
m_2=3\,\text{kg}
m
2
=
3
kg
at
u
2
=
0
u_2=0
u
2
=
0
.
QUESTION
Find
v
2
v_2
v
2
if
m
1
=
m
2
m_1 = m_2
m
1
=
m
2
,
u
2
=
0
u_2 = 0
u
2
=
0
, and after collision
v
1
=
0
v_1 = 0
v
1
=
0
(use momentum conservation).
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ANSWER
v
2
=
u
1
v_2 = u_1
v
2
=
u
1
. Equal masses exchange velocities in this special case.
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