Engineering Mechanics: Dynamics
Actual Exam 2026 Complete Questions
and Verified Answers with Detailed
Rationales 100% Correct Grade A Pass
Guaranteed - A+ Graded
1. Dynamics is primarily concerned with
A. Bodies in static equilibrium
B. Material deformation under load
C. The motion of bodies and the forces causing that motion
D. Heat transfer between objects
Answer: C
Rationale: Dynamics studies motion together with the forces or moments
responsible for producing or changing that motion. It combines kinematics
(motion) and kinetics (forces causing motion).
2. Kinematics differs from kinetics because kinematics
A. Includes only friction forces
B. Describes motion without considering the forces causing it
C. Studies only rotating bodies
D. Applies only to particles
Answer: B
,Rationale: Kinematics focuses solely on describing motion using displacement,
velocity, and acceleration, whereas kinetics relates motion to the forces producing
it.
3. In SI units, velocity is measured in
A. m/s²
B. N
C. kg·m/s²
D. m/s
Answer: D
Rationale: Velocity is displacement per unit time, so its SI unit is meters per
second.
4. Acceleration is defined as the rate of change of
A. Position
B. Mass
C. Velocity
D. Force
Answer: C
Rationale: Acceleration measures how quickly velocity changes with respect to
time.
5. Which quantity is a vector?
A. Time
B. Distance
C. Speed
D. Velocity
Answer: D
,Rationale: Velocity has both magnitude and direction, making it a vector quantity.
6. Newton's Second Law is commonly written as
A. F = mv
B. F = ma
C. W = Fd
D. p = mv²
Answer: B
Rationale: Newton's Second Law states that the net force acting on an object
equals its mass multiplied by its acceleration.
7. If the net external force on a particle is zero, its acceleration is
A. Equal to gravity
B. Constant but nonzero
C. Zero
D. Infinite
Answer: C
Rationale: According to Newton's Second Law, zero net force produces zero
acceleration.
8. The SI unit of force is the
A. Joule
B. Pascal
C. Watt
D. Newton
, Answer: D
Rationale: One newton equals one kilogram-meter per second squared.
9. Which expression defines linear momentum?
A. mv²
B. mv
C. ma
D. mg
Answer: B
Rationale: Linear momentum equals mass multiplied by velocity.
10. Kinetic energy of a particle is
A. mg
B. mv
C. ½mv²
D. Fd
Answer: C
Rationale: Translational kinetic energy equals one-half the mass times the square
of velocity.
11. Work is equal to
A. Force divided by distance
B. Force multiplied by displacement in the force direction
C. Mass multiplied by acceleration
D. Momentum divided by time
Actual Exam 2026 Complete Questions
and Verified Answers with Detailed
Rationales 100% Correct Grade A Pass
Guaranteed - A+ Graded
1. Dynamics is primarily concerned with
A. Bodies in static equilibrium
B. Material deformation under load
C. The motion of bodies and the forces causing that motion
D. Heat transfer between objects
Answer: C
Rationale: Dynamics studies motion together with the forces or moments
responsible for producing or changing that motion. It combines kinematics
(motion) and kinetics (forces causing motion).
2. Kinematics differs from kinetics because kinematics
A. Includes only friction forces
B. Describes motion without considering the forces causing it
C. Studies only rotating bodies
D. Applies only to particles
Answer: B
,Rationale: Kinematics focuses solely on describing motion using displacement,
velocity, and acceleration, whereas kinetics relates motion to the forces producing
it.
3. In SI units, velocity is measured in
A. m/s²
B. N
C. kg·m/s²
D. m/s
Answer: D
Rationale: Velocity is displacement per unit time, so its SI unit is meters per
second.
4. Acceleration is defined as the rate of change of
A. Position
B. Mass
C. Velocity
D. Force
Answer: C
Rationale: Acceleration measures how quickly velocity changes with respect to
time.
5. Which quantity is a vector?
A. Time
B. Distance
C. Speed
D. Velocity
Answer: D
,Rationale: Velocity has both magnitude and direction, making it a vector quantity.
6. Newton's Second Law is commonly written as
A. F = mv
B. F = ma
C. W = Fd
D. p = mv²
Answer: B
Rationale: Newton's Second Law states that the net force acting on an object
equals its mass multiplied by its acceleration.
7. If the net external force on a particle is zero, its acceleration is
A. Equal to gravity
B. Constant but nonzero
C. Zero
D. Infinite
Answer: C
Rationale: According to Newton's Second Law, zero net force produces zero
acceleration.
8. The SI unit of force is the
A. Joule
B. Pascal
C. Watt
D. Newton
, Answer: D
Rationale: One newton equals one kilogram-meter per second squared.
9. Which expression defines linear momentum?
A. mv²
B. mv
C. ma
D. mg
Answer: B
Rationale: Linear momentum equals mass multiplied by velocity.
10. Kinetic energy of a particle is
A. mg
B. mv
C. ½mv²
D. Fd
Answer: C
Rationale: Translational kinetic energy equals one-half the mass times the square
of velocity.
11. Work is equal to
A. Force divided by distance
B. Force multiplied by displacement in the force direction
C. Mass multiplied by acceleration
D. Momentum divided by time
