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MOMENTUM NOT CO=
NSERVED WHEN F EXTERNAL NOT =3D 0<=
/span>
Unit 12 Dr. John P. Cise, Professor =
of
Physics, Austin Com. College, 1212 Rio Grande St., Austin Tx 78701 jpcise@=
austincc.edu
&
New York Times October 10,200=
9 by Alan Schwarz. Please e-ma=
il me
on the format you used this physics application. Thanks! Dr. Cise
Angels’ Running Game Goes Beyond
Stolen Bases
Chone Figgins was hitl=
ess in
five plate appearances Thursday. He stole 42 bases this year as the
Angels’ leadoff man.
INTRO=
DUCTION:=
This 5 oz bunted ball has an in=
itial
speed of 60 mph right to left.
A bunt means
the ball is essentially at almost zero speed=
after
the bat hits the ball. Note: 88 ft/s =3D 60 mph=
p>
QUEST=
ION:=
(a) Find the speed of ball in =
ft/s?
(b) Find the mass of 5 oz ball in slugs? (c)=
Find
initial momentum of ball? (c)
If the bat is in contact with the ball for o.01 s find the force on the ball? No=
te:
sign +/- is important here. HINT: Use impulse-momentum concept. Consider Vfinal
ball =3D 0
ANSWE=
RS:=
(a) 88 ft/s , (b) 0.00977 slug=
s ,
(c) ~ 0.8594 slug ft/s (d) ~ - 86 pounds<=
/b>
|
|
ANAHEIM, Calif. — Observers of the Los Angeles Angels routinely see Chone F=
iggins
win games with his feet, with
his dazzling dogs burning around the bases and generally giving fielders fa=
cial
tics. Skip to next paragraphIn the opening game of the Angels’ division
series against the Boston Red Sox on Thursday night, Figgins
never reached base. Nobody else on the Angels, a team known for its derring=
-do
on the base paths, even had an official stolen base attempt. But still, the
quick feet of Figgins, and a well-timed break toward second by Bo=
bby
Abreu, sparked the Angels’ 5-0 win and reminded onlookers =
how
their quickness can kill in ways the box score will never show.
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