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()
1
0.200 kg 0.600 kg


8.00 m/s
4.00 m/s
0.200 kg 0.600 kg
f
v
−
==
+
.
This becomes the initial speed
v
0
of the projectile motion of block 1.
A variety of choices
for the positive axis directions are possible, and we choose left as the +
x
direction and
down as the +
y
direction, in this instance.
With the “launch” angle being zero, Eq. 421
and Eq. 422 (with
–
g
replaced with
+
g
) lead to
00
0
2
22
(
4
.
9
0
m
)
(4.00 m/s)
9.8 m/s
h
xx v
tv
g
−=
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 Spring '08
 Any
 Physics, Mass

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