PHYSICS 207 COMPREHENSIVE EXAM 2026
1. The SI unit of force is:
A. Joule
B. Watt
C. Newton
D. Pascal
Answer: C
Explanation: The Newton (N) is the unit of force, defined as 1 kg·m/s².
2. Which of the following quantities is a vector?
A. Speed
B. Distance
C. Velocity
D. Work
Answer: C
Explanation: Velocity has both magnitude and direction, making it a vector.
3. The acceleration due to gravity on Earth is approximately:
A. 8.9 m/s²
B. 9.8 m/s²
C. 10.8 m/s²
D. 8.0 m/s²
Answer: B
Explanation: Standard gravitational acceleration on Earth’s surface is 9.8 m/s².
,PHYSICS 207 COMPREHENSIVE EXAM 2026
4. Newton’s First Law states that:
A. F = ma
B. For every action there is an equal reaction
C. An object remains at rest or uniform motion unless acted upon by an external force
D. Energy cannot be created or destroyed
Answer: C
Explanation: This law describes inertia — the tendency of an object to resist change in motion.
5. The work done by a constant force is given by:
A. W = Fd sin θ
B. W = Fd cos θ
C. W = Fd²
D. W = mgh
Answer: B
Explanation: Work equals the product of the force, displacement, and cosine of the angle
between them.
6. The unit of power is:
A. Joule
B. Newton
C. Watt
D. Coulomb
,PHYSICS 207 COMPREHENSIVE EXAM 2026
Answer: C
Explanation: Power is the rate of doing work, measured in watts (1 W = 1 J/s).
7. The kinetic energy of an object is expressed as:
A. ½ mv²
B. mgh
C. Fd
D. P/t
Answer: A
Explanation: Kinetic energy depends on an object’s mass and velocity squared.
8. Potential energy near Earth’s surface is:
A. ½ mv²
B. mgh
C. Fd cos θ
D. qV
Answer: B
Explanation: Gravitational potential energy is the product of mass, gravity, and height.
9. The momentum of a body is defined as:
A. Force × distance
B. Mass × acceleration
C. Mass × velocity
, PHYSICS 207 COMPREHENSIVE EXAM 2026
D. Energy × time
Answer: C
Explanation: Momentum (p) = m × v, a vector quantity showing motion’s magnitude and
direction.
10. The principle of conservation of momentum applies to:
A. Elastic collisions only
B. Inelastic collisions only
C. All isolated systems
D. Rotational systems only
Answer: C
Explanation: In a closed system with no external forces, total momentum remains constant.
11. The work-energy theorem states that:
A. Work done equals change in kinetic energy
B. Energy is always constant
C. Work equals force × time
D. Power equals force × velocity
Answer: A
Explanation: Net work done on an object results in a change in its kinetic energy.
12. A projectile’s horizontal motion is:
1. The SI unit of force is:
A. Joule
B. Watt
C. Newton
D. Pascal
Answer: C
Explanation: The Newton (N) is the unit of force, defined as 1 kg·m/s².
2. Which of the following quantities is a vector?
A. Speed
B. Distance
C. Velocity
D. Work
Answer: C
Explanation: Velocity has both magnitude and direction, making it a vector.
3. The acceleration due to gravity on Earth is approximately:
A. 8.9 m/s²
B. 9.8 m/s²
C. 10.8 m/s²
D. 8.0 m/s²
Answer: B
Explanation: Standard gravitational acceleration on Earth’s surface is 9.8 m/s².
,PHYSICS 207 COMPREHENSIVE EXAM 2026
4. Newton’s First Law states that:
A. F = ma
B. For every action there is an equal reaction
C. An object remains at rest or uniform motion unless acted upon by an external force
D. Energy cannot be created or destroyed
Answer: C
Explanation: This law describes inertia — the tendency of an object to resist change in motion.
5. The work done by a constant force is given by:
A. W = Fd sin θ
B. W = Fd cos θ
C. W = Fd²
D. W = mgh
Answer: B
Explanation: Work equals the product of the force, displacement, and cosine of the angle
between them.
6. The unit of power is:
A. Joule
B. Newton
C. Watt
D. Coulomb
,PHYSICS 207 COMPREHENSIVE EXAM 2026
Answer: C
Explanation: Power is the rate of doing work, measured in watts (1 W = 1 J/s).
7. The kinetic energy of an object is expressed as:
A. ½ mv²
B. mgh
C. Fd
D. P/t
Answer: A
Explanation: Kinetic energy depends on an object’s mass and velocity squared.
8. Potential energy near Earth’s surface is:
A. ½ mv²
B. mgh
C. Fd cos θ
D. qV
Answer: B
Explanation: Gravitational potential energy is the product of mass, gravity, and height.
9. The momentum of a body is defined as:
A. Force × distance
B. Mass × acceleration
C. Mass × velocity
, PHYSICS 207 COMPREHENSIVE EXAM 2026
D. Energy × time
Answer: C
Explanation: Momentum (p) = m × v, a vector quantity showing motion’s magnitude and
direction.
10. The principle of conservation of momentum applies to:
A. Elastic collisions only
B. Inelastic collisions only
C. All isolated systems
D. Rotational systems only
Answer: C
Explanation: In a closed system with no external forces, total momentum remains constant.
11. The work-energy theorem states that:
A. Work done equals change in kinetic energy
B. Energy is always constant
C. Work equals force × time
D. Power equals force × velocity
Answer: A
Explanation: Net work done on an object results in a change in its kinetic energy.
12. A projectile’s horizontal motion is:
