Global MCQ Practice

🌐 Total MCQ
🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books

Class 9 Science Chapter 9 Force And Laws Of Motion Quiz 5 (60 MCQs)

Quiz Instructions

Select an option to see the correct answer instantly.

1. In any collision, ..... is always constant.
2. A constant force acts on an object of mass 5kg for a duration of 2 seconds. It increases the object velocity from 3m/s to 7m/s. Find the magnitude of the applied force. Now if the force was applied for the duration of 5 seconds, what would be the final velocity of the object?
3. A bullet of mass 0.1 kg is fired with a speed of 100 m/s, the mass of the gun being 50 kg. The velocity of recoil is
4. For every action, there is an equal and opposite reaction
5. The tendency of an object to just keep doing what it is doing.
6. A rubbing together force that slows things down and stops them. It works against motion.
7. A moving car suddenly stops, and the passengers tend to move forward due to:
8. MOTION FIRST EQUATION OF MOTION IS
9. Number of forces acting on a body changes velocity of the body. The forces are
10. The tendency of an object to stay in motion or at rest is called
11. Newtons first law of motion is also known as .....
12. Acceleration of an abject depends on its ..... as well as the force exerted on it.
13. A body of mass 2 kg is moving with uniform velocity 2 m/s. Net force acting on it is
14. Name the type of forces acting on the body when resultant force is not equal to zero
15. Compared to its weight on Earth, a 10-kg object on the moon will weigh
16. And units of inertia
17. ..... is a force that acts in opposition to movement.
18. When you tell the direction and speed of an object, you give its
19. According to Newton's third law, if you push gently on something, it will push
20. When a car at high speed makes a sharp turn, the driver in a car tends to get thrown to the side opposite to the turn. This is due to the
21. An object of mass 2 kg is sliding with a constant velocity of 4 ms-1 on a frictionless horizontal table. The force required to keep the object moving with the same velocity is
22. Equal and opposite forces acting on a body which do not change its state of rest or motion are called.
23. Forces do not occur in pairs.
24. To every action there is equal and opposite reaction acting on two different bodies
25. A body in uniform motion will remain in uniform motion if we apply ..... forces.
26. Which has more momentum:a car stopped at a red light or a bike moving at 15 mph?
27. The S.I. unit of momentum is .....
28. A body of mass 3 Kg retards uniformly from 40 m/s to 10 m/s in 10 s. Find the retarding force.
29. A 20 kg bike accelerates at 10 m/s$^{2}$. what was the force?
30. Rate of change of momentum is directly proportional to the force applied on the object in the direction of the force this one is Newton's
31. During football match, the ball shot towards the goal struck the defender's foot at the speed of 10 m/s and it bounces back at 20 m/s. if the time of impact was 0.2 s and mass of the ball 1 kg, then average force exerted by defender on the ball is
32. When the speed of an object is doubled, its momentum
33. A goalkeeper in a game of football pulls his hands backwards after holding the ball shot at the goal. This enables the goal keeper to
34. Inertia is that property of a body by virtue of which the body is
35. How many law of motion are there?
36. If you double the mass of an object with the same force apply on it, the acceleration will
37. The force that draws all objects towards Earth.
38. Inertia is the tendency of an object to resist a change in its .....
39. When a body is stationary it means that:
40. The natural tendency of objects to resist a change in their state of rest or uniform motion is called .....
41. Rocket works on the principle of conservation of .....
42. A body, whose momentum is constant, must have constant
43. I AN ACTION IS OF 10 N, THEN THE REACTION WILL BE OF
44. A boy goes from A to B with a velocity of 20 m/min and comes back from B to A with a velocity of 30 m/min. The average velocity of the boy during the whole journey is
45. A ball of mass 2000g starting from rest moves with a speed of 5m/s for 10seconds. Find the force acting on it?
46. Which of the following situations is possible?
47. Newton's first law that says an object at rest will remain at rest unless acted upon by an unbalanced force is also called the law of
48. The property of an object at rest to remain at rest is known as
49. A body will continue in its state of rest or uniform motion, in a straight line, unless acted by some external force, the statement represents.
50. A ball of mass 10 g is initially moving with a velocity of 50 m/s. On applying a constant force on ball for 2 s, it acquires a velocity of 70 m/s. What is the rate of change of momentum?
51. No force is required for:
52. When a force is applied to a body of mass 2 kg, its velocity changes from 20 ms-1 to 30ms-1 in 2 s. The rate of change of momentum of the body is:
53. Forces are measured in:
54. Effect of action of no net force acting on an object
55. A basketball with a mass of 0.60 kg is accelerated with a force of 10.8 N. If resisting forces are ignored, what is the acceleration of the basketball to the nearest m/s$^{2}$?
56. What options are true about momentuma. Momentum is a vector quantityb. The Unit of Momentum is kgm/sc. Momentum is a scalar quantityd. When two bodies acts on each other and no external force is acting on the system, then the momentum remains constant
57. Which statement best explains Newton's Third Law of Motion?
58. The product of velocity and mass is called
59. A ball is moving over a horizontal smooth surface with a constant velocity. What type of forces are acting on the body?
60. A force is a .....
🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books