1. Linear motion occurs when a body moves:
(A) In a circular path
(B) In a straight line
(C) In a curved path
(D) With constant acceleration
2. The force required to produce linear motion is governed by:
(A) Newton’s First Law
(B) Newton’s Second Law
(C) Newton’s Third Law
(D) Law of Gravitation
3. The formula for force in linear motion is:
(A) F = ma
(B) F = mv
(C) F = m/v
(D) F = a/m
4. The SI unit of force is:
(A) Joule
(B) Newton
(C) Watt
(D) Pascal
5. A body continues its linear motion until:
(A) Its mass changes
(B) A net external force acts on it
(C) It loses energy
(D) Its momentum decreases
6. Acceleration in linear motion is produced when:
(A) Force = zero
(B) Velocity is constant
(C) Net force is applied
(D) Momentum is constant
7. A runner moving in a straight line is an example of:
(A) Angular motion
(B) Linear motion
(C) Oscillatory motion
(D) Random motion
8. The force of friction in linear motion acts:
(A) In the direction of motion
(B) Opposite to motion
(C) Perpendicular to motion
(D) Randomly
9. Work done in linear motion is given by:
(A) Force ÷ Distance
(B) Force × Distance
(C) Mass × Velocity
(D) Distance ÷ Time
10. The momentum of a body in linear motion depends on:
(A) Velocity only
(B) Mass only
(C) Mass and velocity
(D) Force and distance
11. Linear displacement is measured in:
(A) Meters
(B) Radians
(C) Seconds
(D) Newtons
12. When force is constant, acceleration is:
(A) Constant
(B) Zero
(C) Decreasing
(D) Increasing
13. The reaction force of the ground in running is:
(A) Frictional force
(B) Ground reaction force
(C) Normal force
(D) Centripetal force
14. Which law explains the need of seatbelts in linear motion?
(A) Newton’s First Law
(B) Newton’s Second Law
(C) Newton’s Third Law
(D) Law of Momentum
15. The tendency of a moving body to continue in straight line motion is:
(A) Impulse
(B) Inertia
(C) Momentum
(D) Work
16. In biomechanics, linear force is produced mainly by:
(A) Gravity
(B) Muscle contraction
(C) Air resistance
(D) Friction
17. A ball rolling on a smooth floor continues motion due to:
(A) Friction
(B) Inertia
(C) Impulse
(D) Torque
18. Which physical law relates force, mass, and acceleration?
(A) Newton’s First Law
(B) Newton’s Second Law
(C) Newton’s Third Law
(D) Conservation of energy
19. The slope of a velocity-time graph represents:
(A) Speed
(B) Acceleration
(C) Distance
(D) Force
20. The area under a force-time graph gives:
(A) Work
(B) Impulse
(C) Velocity
(D) Power
21. The net force on a body in uniform linear motion is:
(A) Maximum
(B) Zero
(C) Constant
(D) Increasing
22. A freely falling body undergoes:
(A) Uniform linear acceleration
(B) Non-uniform linear motion
(C) Angular motion
(D) Oscillatory motion
23. The linear acceleration due to Earth’s gravity is:
(A) 9.8 m/s²
(B) 6.7 m/s²
(C) 3.6 m/s²
(D) 1.6 m/s²
24. The SI unit of linear momentum is:
(A) Joule
(B) kg·m/s
(C) Watt
(D) Pascal
25. Linear velocity is measured in:
(A) m/s
(B) rad/s
(C) m²/s
(D) N/s
26. If a net force acts on a body, its velocity:
(A) Remains constant
(B) Changes
(C) Reduces to zero
(D) Becomes negative
27. The product of mass and acceleration equals:
(A) Momentum
(B) Impulse
(C) Force
(D) Energy
28. In biomechanics, sprinters use greater force to:
(A) Reduce time
(B) Increase linear acceleration
(C) Reduce distance
(D) Maintain friction
29. The motion of a car on a straight highway is an example of:
(A) Angular motion
(B) Random motion
(C) Linear motion
(D) Oscillatory motion
30. Which of the following is NOT a linear force?
(A) Friction
(B) Gravity
(C) Torque
(D) Applied push
31. The relationship F = ma applies to:
(A) Linear motion
(B) Circular motion only
(C) Oscillations only
(D) Fluids only
32. A constant net force on a body causes:
(A) Constant acceleration
(B) Increasing velocity
(C) Uniform motion
(D) No motion
33. The work-energy principle in linear motion states:
(A) Work = Force ÷ Distance
(B) Work = Change in kinetic energy
(C) Work = Power × Time
(D) Work = Momentum × Velocity
34. A ball thrown vertically upward is an example of:
(A) Linear motion against gravity
(B) Angular motion
(C) Oscillatory motion
(D) Random motion
35. The acceleration of a body decreases when:
(A) Mass increases for same force
(B) Mass decreases for same force
(C) Velocity is constant
(D) Momentum is zero
36. In biomechanics, linear forces affect:
(A) Walking
(B) Running
(C) Jumping
(D) All of the above
37. Newton’s Third Law explains:
(A) Inertia
(B) Linear acceleration
(C) Action-reaction pairs in motion
(D) Conservation of energy
38. The distance covered in linear motion is equal to:
(A) Area under velocity-time graph
(B) Area under force-time graph
(C) Area under acceleration-time graph
(D) Area under mass-time graph
39. In running, the backward push on the ground results in:
(A) Forward linear motion
(B) Angular motion
(C) Random motion
(D) Frictionless motion
40. A ball dropped from a height accelerates due to:
(A) Friction
(B) Gravity
(C) Inertia
(D) Elasticity
41. The linear force needed to move a heavy box is reduced by:
(A) Increasing friction
(B) Using wheels
(C) Reducing mass
(D) Both (B) and (C)
42. Newton’s First Law is also called:
(A) Law of Force
(B) Law of Inertia
(C) Law of Momentum
(D) Law of Energy
43. In biomechanics, a sprinter’s initial acceleration is due to:
(A) Gravity
(B) Frictional force
(C) Ground reaction force
(D) Centripetal force
44. If no net force acts on a moving body, its velocity:
(A) Increases
(B) Decreases
(C) Remains constant
(D) Becomes zero
45. Linear displacement differs from distance because:
(A) It has direction
(B) It is scalar
(C) It is larger
(D) It is constant
46. The linear acceleration of a body is inversely proportional to its:
(A) Velocity
(B) Mass
(C) Momentum
(D) Energy
47. Which is an example of uniform linear motion?
(A) Free fall
(B) Train moving at constant speed on straight track
(C) Car accelerating
(D) Ball thrown upward
48. Linear motion can be changed only by:
(A) Friction
(B) Mass
(C) Force
(D) Momentum
49. The impulse-momentum principle applies to:
(A) Angular motion only
(B) Linear motion only
(C) Both linear and angular motion
(D) Random motion only
50. The unit of linear acceleration is:
(A) m/s
(B) m/s²
(C) N/kg
(D) J/s