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126. (a) This part is essentially a freefall problem, which can be easily done with
Chapter 2 methods. Instead, choosing energy methods, we take
y
= 0 to be the ground
level.
KU KU
m
g
y
m
v
ii
i
+=
+
¡
+
0
1
2
0
2
Therefore
vg
y
i
==
29
2
.ms
, where
y
i
= 4.3 m.
(b) Eq. 829 provides
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This note was uploaded on 05/17/2011 for the course PHY 2049 taught by Professor Any during the Spring '08 term at University of Florida.
 Spring '08
 Any
 Physics, Energy

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