PHYS 165 Module 3 | Physics Exam Q&A | Portage
Learning
These are 100 original multiple-choice practice questions for PHYS 165 Module 3.
Since exact module content varies by institution, this set assumes Module 3 covers
rotational motion, torque, static equilibrium, fluids, oscillations, waves, sound, and
thermodynamics. They are not official examination questions and are not copied from
any textbook, test bank, or copyrighted source.
Question 1:
Angular displacement is measured in:
A. Meters
B. Radians
C. Degrees
D. Seconds
Correct answer: B
Rationale:
Angular displacement is measured in radians (rad).
Question 2:
One complete revolution equals how many radians?
A. π
B. 2π
C. 4π
D. π/2
Correct answer: B
Rationale:
One revolution = 360° = 2π radians.
Question 3:
Convert 180° to radians.
A. π/2
B. π
,C. 2π
D. 3π/2
Correct answer: B
Rationale:
180° × (π/180) = π radians.
Question 4:
Convert 90° to radians.
A. π/4
B. π/2
C. π
D. 2π
Correct answer: B
Rationale:
90° × (π/180) = π/2 radians.
Question 5:
Average angular velocity is defined as:
A. Δθ/Δt
B. Δω/Δt
C. Δθ × Δt
D. Δt/Δθ
Correct answer: A
Rationale:
ω_avg = Δθ/Δt.
Question 6:
The SI unit of angular velocity is:
A. rad/s
B. rad/s²
C. m/s
D. Hz
Correct answer: A
,Rationale:
Angular velocity is measured in rad/s.
Question 7:
Angular acceleration is defined as:
A. Δθ/Δt
B. Δω/Δt
C. Δω × Δt
D. Δt/Δω
Correct answer: B
Rationale:
α = Δω/Δt.
Question 8:
The SI unit of angular acceleration is:
A. rad/s
B. rad/s²
C. m/s²
D. Hz
Correct answer: B
Rationale:
Angular acceleration is measured in rad/s².
Question 9:
Using ω = ω₀ + αt, find ω when ω₀ = 2 rad/s, α = 3 rad/s², and t = 4 s.
A. 5 rad/s
B. 10 rad/s
C. 14 rad/s
D. 24 rad/s
Correct answer: C
Rationale:
ω = 2 + (3)(4) = 14 rad/s.
, Question 10:
Using θ = ω₀t + ½αt², find θ when ω₀ = 0, α = 2 rad/s², and t = 5 s.
A. 10 rad
B. 25 rad
C. 50 rad
D. 100 rad
Correct answer: B
Rationale:
θ = 0 + ½(2)(25) = 25 rad.
Question 11:
The relationship between linear speed and angular speed is:
A. v = ωr
B. v = ω/r
C. v = ωr²
D. v = r/ω
Correct answer: A
Rationale:
v = ωr relates linear and angular speed.
Question 12:
The relationship between tangential acceleration and angular acceleration is:
A. a_t = αr
B. a_t = α/r
C. a_t = αr²
D. a_t = r/α
Correct answer: A
Rationale:
a_t = αr relates tangential and angular acceleration.
Question 13:
A wheel of radius 0.5 m rotates at 4 rad/s. The linear speed at the rim is:
Learning
These are 100 original multiple-choice practice questions for PHYS 165 Module 3.
Since exact module content varies by institution, this set assumes Module 3 covers
rotational motion, torque, static equilibrium, fluids, oscillations, waves, sound, and
thermodynamics. They are not official examination questions and are not copied from
any textbook, test bank, or copyrighted source.
Question 1:
Angular displacement is measured in:
A. Meters
B. Radians
C. Degrees
D. Seconds
Correct answer: B
Rationale:
Angular displacement is measured in radians (rad).
Question 2:
One complete revolution equals how many radians?
A. π
B. 2π
C. 4π
D. π/2
Correct answer: B
Rationale:
One revolution = 360° = 2π radians.
Question 3:
Convert 180° to radians.
A. π/2
B. π
,C. 2π
D. 3π/2
Correct answer: B
Rationale:
180° × (π/180) = π radians.
Question 4:
Convert 90° to radians.
A. π/4
B. π/2
C. π
D. 2π
Correct answer: B
Rationale:
90° × (π/180) = π/2 radians.
Question 5:
Average angular velocity is defined as:
A. Δθ/Δt
B. Δω/Δt
C. Δθ × Δt
D. Δt/Δθ
Correct answer: A
Rationale:
ω_avg = Δθ/Δt.
Question 6:
The SI unit of angular velocity is:
A. rad/s
B. rad/s²
C. m/s
D. Hz
Correct answer: A
,Rationale:
Angular velocity is measured in rad/s.
Question 7:
Angular acceleration is defined as:
A. Δθ/Δt
B. Δω/Δt
C. Δω × Δt
D. Δt/Δω
Correct answer: B
Rationale:
α = Δω/Δt.
Question 8:
The SI unit of angular acceleration is:
A. rad/s
B. rad/s²
C. m/s²
D. Hz
Correct answer: B
Rationale:
Angular acceleration is measured in rad/s².
Question 9:
Using ω = ω₀ + αt, find ω when ω₀ = 2 rad/s, α = 3 rad/s², and t = 4 s.
A. 5 rad/s
B. 10 rad/s
C. 14 rad/s
D. 24 rad/s
Correct answer: C
Rationale:
ω = 2 + (3)(4) = 14 rad/s.
, Question 10:
Using θ = ω₀t + ½αt², find θ when ω₀ = 0, α = 2 rad/s², and t = 5 s.
A. 10 rad
B. 25 rad
C. 50 rad
D. 100 rad
Correct answer: B
Rationale:
θ = 0 + ½(2)(25) = 25 rad.
Question 11:
The relationship between linear speed and angular speed is:
A. v = ωr
B. v = ω/r
C. v = ωr²
D. v = r/ω
Correct answer: A
Rationale:
v = ωr relates linear and angular speed.
Question 12:
The relationship between tangential acceleration and angular acceleration is:
A. a_t = αr
B. a_t = α/r
C. a_t = αr²
D. a_t = r/α
Correct answer: A
Rationale:
a_t = αr relates tangential and angular acceleration.
Question 13:
A wheel of radius 0.5 m rotates at 4 rad/s. The linear speed at the rim is:
