1. What does biomechanics primarily study?
(A) Structure of cells
(B) Forces acting on the human body
(C) Digestion process
(D) Nervous system diseases
2. The term biomechanics is a combination of which two fields?
(A) Biology and Physics
(B) Medicine and Chemistry
(C) Anatomy and Psychology
(D) Engineering and Sociology
3. Who is known as the father of biomechanics?
(A) Hippocrates
(B) Aristotle
(C) Galileo Galilei
(D) Archimedes
4. Which branch of mechanics deals with motion without considering forces?
(A) Dynamics
(B) Kinematics
(C) Statics
(D) Kinetics
5. Which branch of mechanics studies forces that cause motion?
(A) Statics
(B) Kinematics
(C) Kinetics
(D) Dynamics
6. Which law of motion is called the law of inertia?
(A) First law
(B) Second law
(C) Third law
(D) Universal law of gravitation
7. Which law explains the relationship between force, mass, and acceleration?
(A) Newton’s first law
(B) Newton’s second law
(C) Newton’s third law
(D) Pascal’s law
8. Which law is known as the action-reaction law?
(A) Newton’s first law
(B) Newton’s second law
(C) Newton’s third law
(D) Hooke’s law
9. What is the SI unit of force?
(A) Joule
(B) Watt
(C) Newton
(D) Pascal
10. Torque is defined as:
(A) Force × Acceleration
(B) Force × Distance from axis
(C) Mass × Velocity
(D) Pressure × Area
11. Which type of lever is most common in the human body?
(A) First-class lever
(B) Second-class lever
(C) Third-class lever
(D) Fourth-class lever
12. Which lever type is the biceps curl an example of?
(A) First-class
(B) Second-class
(C) Third-class
(D) None
13. The calf raise (standing on tiptoe) is an example of:
(A) First-class lever
(B) Second-class lever
(C) Third-class lever
(D) None of the above
14. A seesaw is an example of which lever?
(A) First-class lever
(B) Second-class lever
(C) Third-class lever
(D) Fourth-class lever
15. Which quantity is a vector?
(A) Speed
(B) Distance
(C) Velocity
(D) Mass
16. Which quantity is scalar?
(A) Force
(B) Acceleration
(C) Speed
(D) Momentum
17. What does the center of gravity represent?
(A) Point of maximum pressure
(B) Point where body’s weight is equally distributed
(C) Point of muscle attachment
(D) Point of maximum velocity
18. In a stable equilibrium, the center of gravity is:
(A) Low
(B) High
(C) Same level
(D) Absent
19. In an unstable equilibrium, the center of gravity is:
(A) Low
(B) High
(C) Zero
(D) None of the above
20. Work is defined as:
(A) Force × Time
(B) Force × Distance moved in the direction of force
(C) Mass × Acceleration
(D) Energy × Time
21. The SI unit of work is:
(A) Newton
(B) Joule
(C) Watt
(D) Pascal
22. Power is defined as:
(A) Work ÷ Time
(B) Force ÷ Mass
(C) Distance ÷ Speed
(D) Energy ÷ Pressure
23. The SI unit of power is:
(A) Joule
(B) Watt
(C) Newton
(D) Pascal
24. Which type of motion is a gymnast spinning in the air?
(A) Linear motion
(B) Angular motion
(C) Curvilinear motion
(D) Rectilinear motion
25. Running in a straight line is an example of:
(A) Angular motion
(B) Rectilinear motion
(C) Rotational motion
(D) Curvilinear motion
26. The flight of a thrown ball represents:
(A) Linear motion
(B) Rotational motion
(C) Curvilinear motion
(D) Static motion
27. Which force resists motion between two surfaces in contact?
(A) Gravity
(B) Friction
(C) Torque
(D) Inertia
28. Which factor increases stability?
(A) Narrow base of support
(B) High center of gravity
(C) Wide base of support
(D) Reduced weight
29. Which type of force produces rotation?
(A) Linear force
(B) Shear force
(C) Torque
(D) Compression force
30. Which type of force pushes tissues together?
(A) Shear force
(B) Compression force
(C) Tension force
(D) Torque
31. Which type of force pulls tissues apart?
(A) Tension force
(B) Compression force
(C) Shear force
(D) Torque
32. Which type of force acts parallel to a surface?
(A) Compression force
(B) Shear force
(C) Torque
(D) Gravity
33. Angular velocity is measured in:
(A) Meters per second
(B) Radians per second
(C) Newtons
(D) Joules
34. Linear velocity is measured in:
(A) Radians per second
(B) Newtons
(C) Meters per second
(D) Joules
35. The resistance arm is:
(A) Distance between force and axis
(B) Distance between load and axis
(C) Distance between load and force
(D) None of the above
36. The effort arm is:
(A) Distance between effort and axis
(B) Distance between load and axis
(C) Distance between load and force
(D) None of the above
37. Which law explains why sprinters push against the ground?
(A) Newton’s first law
(B) Newton’s second law
(C) Newton’s third law
(D) Archimedes’ principle
38. Which mechanical principle explains why crutches increase stability?
(A) Center of gravity lowered
(B) Base of support widened
(C) Torque reduced
(D) Momentum increased
39. The knee joint mainly functions as which type of lever?
(A) First-class
(B) Second-class
(C) Third-class
(D) Variable
40. The mechanical advantage of a lever is calculated as:
(A) Effort arm ÷ Resistance arm
(B) Resistance arm ÷ Effort arm
(C) Force × Distance
(D) Mass ÷ Velocity
41. A lever with mechanical advantage greater than 1 is designed for:
(A) Speed
(B) Range of motion
(C) Force
(D) Flexibility
42. A lever with mechanical advantage less than 1 is designed for:
(A) Force
(B) Stability
(C) Speed and range of motion
(D) Balance
43. Which of the following is a closed-chain exercise?
(A) Biceps curl
(B) Squat
(C) Leg extension
(D) Shoulder press
44. Which of the following is an open-chain exercise?
(A) Push-up
(B) Pull-up
(C) Leg extension
(D) Squat
45. The line of gravity in the human body normally passes:
(A) Anterior to the knee joint
(B) Posterior to the ankle joint
(C) Through the center of the body
(D) Only through the spine
46. Which factor decreases stability?
(A) Wide base of support
(B) High center of gravity
(C) Low center of gravity
(D) Large body mass
47. Momentum is defined as:
(A) Mass × Acceleration
(B) Mass × Velocity
(C) Force × Distance
(D) Power × Time
48. Impulse is equal to:
(A) Force × Time
(B) Mass × Velocity
(C) Work ÷ Time
(D) Torque × Distance
49. Which branch of biomechanics studies the mechanics of injury prevention?
(A) Sports biomechanics
(B) Occupational biomechanics
(C) Clinical biomechanics
(D) Rehabilitation biomechanics
50. Biomechanics helps physiotherapists by:
(A) Understanding motion, forces, and designing rehabilitation programs
(B) Prescribing drugs
(C) Performing surgery
(D) Conducting X-rays