Collisions in 2D

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Collisions in 2-D
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Sample problem
Conserve momentum
30 kg
5 kg
10 m/s
H ?
Conserve energy
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4
A
B
C
D
E
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(No Transcript)
6
A
B
C
D
E
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(No Transcript)
8
A
B
C
D
E
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?
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Collisions in two directions
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A car and a truck, velocities and masses shown,
collide and lock bumpers. Find the final
velocity (magnitude and direction) of the pair.
vf
vc 15 m/s
?
370
Mc 2000 kg
vt 5 m/s
Mt 8000 kg
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Again.
v 10 m/s
v 20 m/s
m 200 kg
m 200 kg
v 30 m/s
3-way bumper lock!
m 200 kg
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A pendulum consists of a ball of mass 3.0 kg on a
string of length 4.0 m. The ball is pulled back
until its center of mass has risen to a height of
0.80 m. The ball is released such that it
strikes a 1.0 kg block as shown. The speed of
the block after the collision is measured to be
6.0 m/s. What flavor of collision is this
(elastic, inelastic, or maximally inelastic)?
4 m
3 kg
1 kg