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31. We adopt the positive direction choices used in the textbook so that equations such as
Eq. 422 are directly applicable. The coordinate origin is at ground level directly below
the release point. We write
θ
0
= –37.0° for the angle measured from +
x
, since the angle
given in the problem is measured from the –
y
direction. We note that the initial speed of
the projectile is the plane’s speed at the moment of release.
(a) We use Eq. 422 to find
v
0
:
2
22
00
0
0
11
(
sin
)
0 730 m
sin( 37.0 )(5.00 s)
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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

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