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1
Phy 2053 Announcements
±
Homework 1 due Jan 21 is posted in
webassign. It will count towards course grade.
±
3 more days to register your code in
webassign
±
Yellow book (past exams and solutions)
available at Target Copy for $16
±
Should have received email listing your clicker
response. Clicker questions will count towards
course grade starting Jan 27.
±
Optional solution manual: a limited number of
copies will be available today at the UF
bookstore, at ~ $54. It contains solutions to
some but not all
of the problems at the back
of chapters.
Kinematic Equations
±
Used in situations with uniform
acceleration
=
+
o
vv
a
t
2
o
at
2
1
t
v
x
+
=
∆
=
+∆
22
2
o
a
x
(1)
(2)
(3)
t
2
v
v
t
v
x
f
o
average
⎟
⎠
⎞
⎜
⎝
⎛
+
=
=
∆
Important: use the correct sign for x, v and a.
Some examples of Use
t
2
v
v
t
v
x
f
o
average
⎟
⎠
⎞
⎜
⎝
⎛
+
=
=
∆
Acceleration not in equation
=+
∆
2
o
a
x
Time not in equation :
o
vv a
t
Displacement not in equation:
2
o
at
2
1
t
v
x
+
=
∆
Final velocity not in equation :
Free Fall
±
If only force on object moving near surface of
the earth is gravity it is in
free fall
±
Free fall is constant acceleration (same for
all
objects)
±
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 Spring '06
 Buchler
 Physics, Work

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