PHYSICS: PHS1011
Classical physics Thermodynamics Waves Rela6vity
1
2
Mechanics Lectures
We expect you to know the material from
chapters 14 from high school experience.
Most of these rst few lectures should s6ll be
high school revision for most

PHS1011
What are the units of momentum?
A.
B.
C.
D.
kg m / s2
m / s2
kg m / s
kg / s2
What are the units of impulse?
A.
B.
C.
D.
kg m / s2
m / s2
kg m / s
kg / s2
What quantities are conserved in
an elastic collision?
A. Neither energy nor
momentum
B. Ene

Mechanics 2 Quiz
PHS1011
An object is in equilibrium when
A. no forces are ac@ng
on it.
B. it is located at the
origin of the
coordinate system.
C. it has zero velocity.
D. the sum of all forces
ac@ng on it is zero.
Knight discusses three kinds

PHYSICS: PHS1011
Classical physics Thermodynamics Waves Rela6vity
1
Which of the following is false for massless
strings and fric6onless pulleys?
A. If two objects are connected by a (taught)
string, the tension is the same at both ends.
B. If the st

P
H
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C
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P
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0
1
1
1
A par&cle moves counter-clockwise with
uniform circular mo,on. Which arrow indicates
the velocity?
A. A
B. B
C. C
D. D
A
D
B
C
No discussion: this is a quiz.
A par&cle moves counter-clockwise with
uniform circular mo,

Announcements
Written Assignment 1
Available this week, due at 12:00 PM on
April 8 in PACE.
Reading for next class: Chapter 10
again (Energy, especially springs &
Hookes Law).
Which of the following is a unit for
energy?
A.
B.
C.
D.
Joules
Newtons
kg m

Announcements
Written Assignment 1
Available this week, due at 12:00 PM on
April 8 in PACE.
Reading for next class: Chapter 11
(Work).
Today: Hookes Law, Energy, and Work
An equilibrium for which small disturbances
cause small oscillations is called a

Announcements
Written Assignment 1
Available this week, due at 12:00 PM on
April 8 in PACE.
Reading for next class: Chapter 10
(Energy).
What is the relationship between
force and momentum?
A.
B.
C.
D.
F = Integral[p(t) dt]
F = dp/dt
F=mp
F=p/m
What qu

Announcements
Written Assignment 1
Available this week, due at 12:00 PM on
April 8 in PACE.
Reading for next class: More
Chapter 11 (Work).
Today: Chapter 11 Work
What are the units of work?
A. kg m2 / s2
B. kg m2 / s
C. kg m / s
D. kg m2 / s3
No

Announcements
Written Assignment 1
Available this week, due at 12:00 PM on
April 8 in PACE.
After the break: thermal physics with Dr. Lincoln
Turner. (Today is my last lecture)
Reading for next class: Chapter 16
(Macroscopic Matter).
Announcements
Wr