This preview shows pages 1–2. Sign up to view the full content.
Name: _
Answers_
_______
P2601 (Spring 2010)
Individual Exam 1
Time flies like an arrow; fruit flies like a banana.
Groucho Marx
Possibly
Useful Formulas: 1 in=2.54 cm, 1kg~2.2 lb;
222
2c
o
s
cab
a
bC
;
sin
sin
sin
abc
A
BC
; hyp
2
=opp
2
+adj
2
;
SOHCAHTOA;
circle area=
r
2
, circumf=2
r; sphere vol=4/3
r
3
, area=4
r
2
; If
ax
2
+bx+=0
, then
2
4
2
bba
c
x
a
;
i
ttt
;
f
i
x
x
v
t
;
f
i
vv
a
t
;
x=x
i
+
v
t; v=v
i
+
a
t
;
0
lim
inst
t
v
a
t
;
0
lim
inst
t
x
v
t
For constant a:
2
i
f
v
v
v
;
x
x
i
=v
i
t+
1
2
at
2
; x
x
i
=v
f
t
1
2
at
2
v
x
2
=v
xi
2
+2a
x
(xx
i
);
2sin
cos
=sin2
; sin
2
+cos
2
=1
;
use
g=10m/s
2
;
Projectiles:
For
measured from the +x axis:
v
x
=
v
cos
,
v
y
=
v
sin
,
tan
=
v
y
/
v
x
;
0
cos
x
vt
;
2
0
1
sin
2
yv
t
g
t
; F
D
= ½ C
D
Av
2
(gases)
2
22
0
tan
cos
g
x
yx
v
;a
centrip
= v
2
/r=
2
r;
T=1/f=2
;
Forces:
F
=m
a
; F
AB
=
F
BA
,
f
k
=
k
F
N
,
f
s
s
F
N
;
=tan
max
; Atwood pulley system:
21
2
1
12
()
;
mm
m
m
ag
Tg
Remember that unless otherwise noted you must ALWAYS explain your reasoning clearly.
Even if the final
result is correct, you will lose points for incoherent answers.
_______________________________
I.
(7 pts each) For the multiple choice
only
: No explanation is needed if your answer is correct.
Justify your answer
with well chosen words or a formula and you
may
receive partial credit even for a wrong answerbut use your
time wisely.
1.
E
_ The position of an object at equal time intervals is shown below:
Which graph below correctly represents position versus time for this object?
This preview has intentionally blurred sections. Sign up to view the full version.
View Full Document
This is the end of the preview. Sign up
to
access the rest of the document.
 Summer '10
 Andrews
 Physics

Click to edit the document details