PHYS 165 Module 8 | Physics Exam Q&A | Portage
Learning
Here are 100 original multiple-choice practice questions for PHYS 165 Module 8. This
module is assumed to be a final comprehensive review and capstone module,
integrating all major physics topics: mechanics, energy, momentum, rotational motion,
fluids, oscillations, waves, thermodynamics, electricity, magnetism, optics, and modern
physics. They are not official examination questions and are not copied from any
textbook, test bank, or copyrighted source.
Question 1:
Which of the following is a scalar quantity?
A. Displacement
B. Velocity
C. Acceleration
D. Speed
Correct answer: D
Rationale:
Speed has magnitude only, making it a scalar.
Question 2:
The SI unit of work is the:
A. Newton
B. Joule
C. Watt
D. Pascal
Correct answer: B
Rationale:
Work is measured in joules (J).
Question 3:
A car travels 80 m north then 30 m south. Its displacement is:
A. 50 m north
B. 110 m north
,C. 50 m south
D. 110 m south
Correct answer: A
Rationale:
Displacement = 80 − 30 = 50 m north.
Question 4:
The area under a velocity-time graph gives:
A. Acceleration
B. Displacement
C. Force
D. Power
Correct answer: B
Rationale:
The area under a velocity-time graph equals displacement.
Question 5:
An object is dropped from rest. After 3 s, its speed is about:
A. 9.8 m/s
B. 19.6 m/s
C. 29.4 m/s
D. 39.2 m/s
Correct answer: C
Rationale:
v = gt = 9.8 × 3 = 29.4 m/s.
Question 6:
A ball is thrown straight up at 30 m/s. Its maximum height is about:
A. 15 m
B. 30 m
C. 46 m
D. 90 m
Correct answer: C
,Rationale:
h = v₀²/(2g) = 900/19.6 ≈ 46 m.
Question 7:
Newton’s third law states that:
A. F = ma
B. For every action, there is an equal and opposite reaction
C. Objects at rest stay at rest
D. Energy is conserved
Correct answer: B
Rationale:
Forces occur in equal and opposite pairs.
Question 8:
A 5 kg object experiences a net force of 25 N. Its acceleration is:
A. 0.2 m/s²
B. 5 m/s²
C. 20 m/s²
D. 125 m/s²
Correct answer: B
Rationale:
a = F/m = 25/5 = 5 m/s².
Question 9:
The force of friction is:
A. f = μN
B. f = ma
C. f = mg
D. f = μ/m
Correct answer: A
Rationale:
Friction force equals the coefficient of friction times the normal force.
, Question 10:
On an incline of angle θ, the component of weight parallel to the incline is:
A. mg
B. mg sinθ
C. mg cosθ
D. mg tanθ
Correct answer: B
Rationale:
The parallel component is mg sinθ.
Question 11:
The work-energy theorem states that net work equals:
A. Change in momentum
B. Change in kinetic energy
C. Change in potential energy
D. Total energy
Correct answer: B
Rationale:
W_net = ΔKE.
Question 12:
A 4 kg object moves at 5 m/s. Its kinetic energy is:
A. 10 J
B. 20 J
C. 50 J
D. 100 J
Correct answer: C
Rationale:
KE = ½(4)(5²) = 50 J.
Question 13:
A 3 kg object is lifted 4 m. Its increase in potential energy is about:
Learning
Here are 100 original multiple-choice practice questions for PHYS 165 Module 8. This
module is assumed to be a final comprehensive review and capstone module,
integrating all major physics topics: mechanics, energy, momentum, rotational motion,
fluids, oscillations, waves, thermodynamics, electricity, magnetism, optics, and modern
physics. They are not official examination questions and are not copied from any
textbook, test bank, or copyrighted source.
Question 1:
Which of the following is a scalar quantity?
A. Displacement
B. Velocity
C. Acceleration
D. Speed
Correct answer: D
Rationale:
Speed has magnitude only, making it a scalar.
Question 2:
The SI unit of work is the:
A. Newton
B. Joule
C. Watt
D. Pascal
Correct answer: B
Rationale:
Work is measured in joules (J).
Question 3:
A car travels 80 m north then 30 m south. Its displacement is:
A. 50 m north
B. 110 m north
,C. 50 m south
D. 110 m south
Correct answer: A
Rationale:
Displacement = 80 − 30 = 50 m north.
Question 4:
The area under a velocity-time graph gives:
A. Acceleration
B. Displacement
C. Force
D. Power
Correct answer: B
Rationale:
The area under a velocity-time graph equals displacement.
Question 5:
An object is dropped from rest. After 3 s, its speed is about:
A. 9.8 m/s
B. 19.6 m/s
C. 29.4 m/s
D. 39.2 m/s
Correct answer: C
Rationale:
v = gt = 9.8 × 3 = 29.4 m/s.
Question 6:
A ball is thrown straight up at 30 m/s. Its maximum height is about:
A. 15 m
B. 30 m
C. 46 m
D. 90 m
Correct answer: C
,Rationale:
h = v₀²/(2g) = 900/19.6 ≈ 46 m.
Question 7:
Newton’s third law states that:
A. F = ma
B. For every action, there is an equal and opposite reaction
C. Objects at rest stay at rest
D. Energy is conserved
Correct answer: B
Rationale:
Forces occur in equal and opposite pairs.
Question 8:
A 5 kg object experiences a net force of 25 N. Its acceleration is:
A. 0.2 m/s²
B. 5 m/s²
C. 20 m/s²
D. 125 m/s²
Correct answer: B
Rationale:
a = F/m = 25/5 = 5 m/s².
Question 9:
The force of friction is:
A. f = μN
B. f = ma
C. f = mg
D. f = μ/m
Correct answer: A
Rationale:
Friction force equals the coefficient of friction times the normal force.
, Question 10:
On an incline of angle θ, the component of weight parallel to the incline is:
A. mg
B. mg sinθ
C. mg cosθ
D. mg tanθ
Correct answer: B
Rationale:
The parallel component is mg sinθ.
Question 11:
The work-energy theorem states that net work equals:
A. Change in momentum
B. Change in kinetic energy
C. Change in potential energy
D. Total energy
Correct answer: B
Rationale:
W_net = ΔKE.
Question 12:
A 4 kg object moves at 5 m/s. Its kinetic energy is:
A. 10 J
B. 20 J
C. 50 J
D. 100 J
Correct answer: C
Rationale:
KE = ½(4)(5²) = 50 J.
Question 13:
A 3 kg object is lifted 4 m. Its increase in potential energy is about:
