1. Impulse is defined as:
(A) Force ÷ Time
(B) Force × Time
(C) Mass × Acceleration
(D) Velocity ÷ Time
2. The SI unit of impulse is:
(A) Joule
(B) Newton
(C) Newton-second (Ns)
(D) Watt
3. Impulse is equal to change in:
(A) Acceleration
(B) Displacement
(C) Momentum
(D) Energy
4. The impulse-momentum theorem states:
(A) Impulse = Work
(B) Impulse = Force × Distance
(C) Impulse = Change in momentum
(D) Impulse = Acceleration × Mass
5. In a force-time graph, impulse is represented by:
(A) Slope of graph
(B) Area under graph
(C) Maximum value of force
(D) Intercept on axis
6. Increasing the time of impact reduces:
(A) Velocity
(B) Force of impact
(C) Mass
(D) Work
7. In sports, impulse is used to:
(A) Reduce injuries
(B) Maximize performance
(C) Control motion
(D) All of the above
8. The larger the impulse, the greater the:
(A) Change in velocity
(B) Change in momentum
(C) Change in force
(D) Change in acceleration
9. A cricketer lowers hands while catching to:
(A) Reduce impulse
(B) Increase force
(C) Increase time of impact
(D) Reduce mass of ball
10. The impulse of a constant force is equal to:
(A) Force ÷ Time
(B) Force × Time
(C) Force × Distance
(D) Force ÷ Mass
11. Airbags in cars work on the principle of:
(A) Reducing velocity
(B) Increasing time of impact
(C) Decreasing mass
(D) Reducing impulse
12. The momentum of an object changes due to:
(A) Impulse
(B) Acceleration
(C) Distance
(D) Gravity only
13. Which of the following has the same unit as impulse?
(A) Energy
(B) Work
(C) Momentum
(D) Power
14. Impulse depends on:
(A) Force and acceleration
(B) Mass and distance
(C) Force and time
(D) Mass and weight
15. If force is doubled and time halved, impulse becomes:
(A) Doubled
(B) Same
(C) Halved
(D) Zero
16. Increasing contact time in collisions helps to:
(A) Increase damage
(B) Reduce force
(C) Increase acceleration
(D) Reduce velocity
17. An athlete runs before a long jump to:
(A) Increase mass
(B) Increase impulse
(C) Increase friction
(D) Reduce force
18. Which law is related to impulse?
(A) Newton’s First Law
(B) Newton’s Second Law
(C) Newton’s Third Law
(D) Law of Gravitation
19. A goalkeeper moves backward while catching a fast ball to:
(A) Decrease momentum
(B) Increase time of impact
(C) Increase impulse
(D) Increase force
20. The greater the impulse delivered to an object, the greater the:
(A) Work done
(B) Change in displacement
(C) Change in momentum
(D) Mass
21. Impulse and momentum are:
(A) Scalars
(B) Vectors
(C) Constant quantities
(D) Equal always
22. In a force-time graph, a wider graph indicates:
(A) Smaller impulse
(B) Larger impulse
(C) Constant momentum
(D) Less velocity
23. To minimize injury in boxing, boxers use:
(A) Shorter impact time
(B) Gloves to increase impact time
(C) Greater impulse
(D) Reduced velocity
24. Impulse applied over a longer time results in:
(A) Greater force
(B) Smaller force
(C) Constant force
(D) No change
25. Which factor is most crucial in reducing collision injuries?
(A) High velocity
(B) Reduced time
(C) Increased time of impact
(D) Increased mass
26. The unit Newton-second is equivalent to:
(A) Joule
(B) Watt
(C) kg·m/s
(D) m/s²
27. In gymnastics, mats are used to:
(A) Reduce force by increasing time of impact
(B) Increase velocity
(C) Reduce impulse
(D) Reduce momentum
28. A moving car stopped by a wall experiences:
(A) Small impulse
(B) Large impulse
(C) No impulse
(D) Constant force
29. Impulse can change an object’s:
(A) Mass
(B) Momentum
(C) Distance
(D) Time
30. The concept of impulse is widely applied in:
(A) Sports
(B) Vehicle safety
(C) Military defense
(D) All of the above
31. An impulse is greater if:
(A) Force is greater
(B) Time is greater
(C) Both force and time are greater
(D) Force is smaller
32. In baseball, hitting a ball harder provides:
(A) More impulse
(B) Less impulse
(C) Same impulse
(D) No impulse
33. A rubber ball bouncing off the floor has more impulse than a clay ball because:
(A) It sticks to the surface
(B) It reverses direction, changing momentum more
(C) It loses energy
(D) It reduces force
34. Impulse is mathematically represented as:
(A) J = Ft
(B) J = mv
(C) J = m/a
(D) J = F/v
35. Seatbelts reduce injuries by:
(A) Increasing force
(B) Increasing time of impact
(C) Reducing velocity
(D) Increasing impulse
36. If force is constant, impulse is proportional to:
(A) Distance
(B) Time
(C) Mass
(D) Acceleration
37. Impulse is often described as:
(A) Sudden push or pull
(B) Gradual force
(C) Average work
(D) Constant energy
38. An impulse of zero means:
(A) Momentum does not change
(B) Momentum increases
(C) Force is very high
(D) Time is very high
39. The force-time relationship is essential in:
(A) Sports science
(B) Biomechanics
(C) Engineering
(D) All of the above
40. In martial arts, breaking a board requires:
(A) Large impulse in short time
(B) Small impulse in long time
(C) No impulse
(D) Minimum force
41. Which safety feature increases impulse time during crashes?
(A) Airbags
(B) Helmets
(C) Cushions
(D) All of the above
42. The average force applied is equal to:
(A) Impulse ÷ Time
(B) Impulse × Time
(C) Impulse ÷ Mass
(D) Impulse × Distance
43. A bouncing ball experiences a larger impulse than a non-bouncing ball because:
(A) Greater force
(B) Greater time
(C) Greater momentum change
(D) Greater mass
44. If time of impact doubles, force experienced:
(A) Doubles
(B) Halves
(C) Stays constant
(D) Becomes zero
45. A moving vehicle stopped gradually experiences:
(A) Larger force
(B) Smaller force
(C) Same force
(D) No impulse
46. In biomechanics, impulse is critical for:
(A) Running strides
(B) Jumping
(C) Throwing events
(D) All of the above
47. Which principle explains “soft landings” on sand in long jump?
(A) Work-energy principle
(B) Impulse-momentum principle
(C) Conservation of mass
(D) Newton’s law of gravitation
48. The impulse-momentum principle is a practical form of:
(A) Newton’s First Law
(B) Newton’s Second Law
(C) Newton’s Third Law
(D) Law of inertia
49. A short collision time with large force produces:
(A) Large impulse
(B) Small impulse
(C) No impulse
(D) Constant momentum
50. Impulse is useful in analyzing:
(A) Sports impacts
(B) Vehicle crashes
(C) Explosions
(D) All of the above