homework 22 – NOORANI, ZOHEB
1
Latest unpenalized work: Mar 21 2008 Friday
04:00 (after this date you can not make a
perfect score).
Work cutoff:
Mar 22 2008,
4:00 am.
Question 1, chap 11, sect 2.
part 1 of 1
10 points
A 0.451 kg bead slides on a straight fric
tionless wire with a velocity of 4.58 cm/s to
the right, as shown.
The bead collides elas
tically with a larger 0.626 kg bead initially
at rest. After the collision, the smaller bead
moves to the left with a velocity of 0.66 cm/s.
0
.
451 kg
4
.
58 cm
/
s
0
.
626 kg
Find the distance the larger bead moves
along the wire in the first 4.9 s following the
collision.
Answer in units of cm.
Question 2, chap 11, sect 2.
part 1 of 2
10 points
Consider the collision of two identical par
ticles, where the initial velocity of particle 1
is
v
1
and particle 2 is initially at rest.
1
2
v
1
After an elastic headon collision, the final
velocity of particle 2
v
′
2
is given by
1.
v
′
2
= 2
v
1
2.
v
′
2
=
v
1
3
3.
v
′
2
=
4
v
1
3
4.
v
′
2
=
v
1
4
5.
v
′
2
= 0
6.
v
′
2
=
3
v
1
4
7.
v
′
2
=
v
1
8.
v
′
2
=
5
v
1
3
9.
v
′
2
=
v
1
2
10.
v
′
2
=
2
v
1
3
Question 3, chap 11, sect 2.
part 2 of 2
10 points
Next replace particle 1 by a sledge hammer
with mass
m
1
= 10 kg, particle 2 by a golf
ball with a mass
m
2
= 10 g.
Consider the
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 Spring '08
 Turner
 Mass, Work, Velocity, kg, sledge hammer

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