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Quiz5 - Physics 7B-A/B Quiz 5 DL sec Name last frst Codes...

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Unformatted text preview: Physics 7B-A/B Quiz # 5 DL sec: Name: 2/20/08 last, frst Codes: grading use only Quiz
5
Rubric: Rubric
for
problems
1a
and
1b: (¡ 'VMMZ DPSSFDU +¡ &SSPS DPOWFSUJOH UP DPOTJTUFOU VOJUT ¢ FY¡ £¤¥ NT ¦ ¥¤¥¥£T§ OPU £¥¥¥¥¥¥T ¨ ,¡ 4JHOJGJDBOU FSSPS CVU PUIFSXJTF WBMJE QIZTJDT ¢ FY¡ XSPOH FRVBUJPO ¨ 3¡ #MBOL§ OPO©OVNFSJD§ PS OPO©QIZTJDBM BOTXFS 1)

A
0.045
kg
golf
ball
is
initially
at
rest
when
it
is
hit
by
a
driving
club
and
is
given
a
speed
of
 40
m/s.

 a)

(20%)What
impulse
has
the
golf
ball
received? impulse
=
Î p

= 

(0.045
kg)(40
m/s)
=
1.8
kg
m/s b)

(20%)
If
the
club
head
was
in
contact
with
the
golf
ball
for
2.0
ms,
what
average
force
was
 applied
to
the
golf
ball
by
the
club
head? F = total impulse total time = 1.8 kg ⋅ m/s 2 × 10-3 s 

=

900
N 1SPCMFN £B BOE £C¡ (¡ 'VMMZ...
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