MCQs For Class 9 Science

Q1. A body whose position with respect to a fixed reference point does not change is said to be:

Q2. The shortest distance measured from the initial to the final position of an object is known as:

Q3. Which of the following is a scalar quantity?

Q4. Which of the following is a vector quantity?

Q5. The SI unit of speed is:

Q6. The SI unit of acceleration is:

Q7. If an object covers equal distances in equal intervals of time, it is said to be in:

Q8. Average speed is calculated by the formula:

Q9. Velocity is defined as:

Q10. Negative acceleration is also known as:

Q11. The numerical ratio of displacement to distance for a moving object is:

Q12. If a body starts from rest, its initial velocity (u) is:

Q13. If a body comes to rest, its final velocity (v) is:

Q14. The slope of a distance-time graph gives:

Q15. The slope of a velocity-time graph gives:

Q16. The area under a velocity-time graph represents:

Q17. Which of the following remains constant in uniform circular motion?

Q18. A car travels 100 km in 2 hours. Its average speed is:

Q19. Acceleration is a ________ quantity.

Q20. Which equation represents the first equation of motion?

Q21. Which equation represents the second equation of motion?

Q22. Which equation represents the third equation of motion?

Q23. Odometer of a car measures:

Q24. Speedometer of a car measures:

Q25. If the velocity of an object increases with time, its acceleration is:

Q26. If the velocity-time graph is a straight line parallel to the time axis, the acceleration is:

Q27. When a body moves in a circular path with uniform speed, its motion is:

Q28. An object moves 4m North and then 3m East. What is its displacement?

Q29. A particle is moving in a circular path of radius 'r'. The displacement after half a circle would be:

Q30. Displacement can be ________.

Q31. Distance is always ________.

Q32. A body moves along a straight line. If it travels 5m in 1st second, 5m in 2nd second and 5m in 3rd second, the motion is:

Q33. What is the formula for the velocity of an object in uniform circular motion?

Q34. 36 km/h is equal to:

Q35. 18 m/s is approximately equal to:

Q36. Acceleration of a body is defined as the:

Q37. If a stone is thrown vertically upwards and it reaches a height 'h', then its velocity at the highest point is:

Q38. In a distance-time graph, a straight line inclined to the time axis shows:

Q39. A horizontal line on a distance-time graph means the object is:

Q40. Average velocity of a body is zero when:

Q41. Which of the following can be zero for a moving body?

Q42. A boy runs around a circular track of 100m and comes back to the starting point. His displacement is:

Q43. The motion of a pendulum is an example of:

Q44. Motion of blades of an electric fan is:

Q45. A body goes from A to B with velocity 'v' and returns B to A with velocity 'v'. The average velocity for the whole journey is:

Q46. The physical quantity that has both magnitude and direction is called:

Q47. If acceleration is in the direction of velocity, it is:

Q48. Deceleration is:

Q49. For an object dropped from a height, the initial velocity is:

Q50. Motion of a car on a crowded city road is an example of: