Physics questions and answers for university Year I

PHYSICS QUESTIONS AND
ANSWERS
Mechanics

1. Which of the following quantities is a vector?
A) Speed
B) Distance
C) Mass
D) Velocity
Answer: D


2. What is the SI unit of force?
A) Joule
B) Pascal
C) Newton
D) Watt
Answer: C


3. Newton's First Law is also known as the law of:
A) Acceleration
B) Gravitation
C) Inertia
D) Action and Reaction
Answer: C


4. What is the acceleration due to gravity on Earth?
A) 8.9 m/s²
B) 9.8 m/s²
C) 10.8 m/s²
D) 11.2 m/s²
Answer: B


5. What is work done when a force is perpendicular to the displacement?
A) Maximum
B) Minimum
C) Zero

, D) Constant
Answer: C


6. Kinetic energy of a moving body is given by:
A) mv
B) mv²
C) ½mv²
D) mgh
Answer: C


7. The momentum of an object is:
A) Force × Distance
B) Mass × Velocity
C) Energy × Time
D) Acceleration × Time
Answer: B


8. A body thrown vertically upward has:
A) Constant speed
B) Constant acceleration
C) Increasing acceleration
D) Zero acceleration
Answer: B


9. Unit of power is:
A) Joule
B) Newton
C) Watt
D) Coulomb
Answer: C


10. One horsepower is equal to:
A) 735 W
B) 746 W
C) 1000 W
D) 550 W
Answer: B