21. We use coordinates with +
x
horizontally toward the pitcher and +
y
upward. Angles
are measured counterclockwise from the +
x
axis. Mass, velocity and momentum units are
SI. Thus, the initial momentum can be written
G
p
0
4 5
215
=∠
°
.
bg
in magnitudeangle
notation.
(a) In magnitudeangle notation, the momentum change is
(6.0
∠
– 90°) – (4.5
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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, Mass, Momentum

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