Class 9 – Practice Level 1 – Motion Leave a Comment / By anushka kumari / July 5, 2024 Class 9 - Practice Level 1 – Motion Total questions: 40 1. What is the total distance covered by a body moving from point A to point B and back to point A? Zero The distance between A and B Twice the distance between A and B None of the above None 2. If a car travels 100 km in 2 hours, what is its average speed? 50 km/h 100 km/h 25 km/h 200 km/h None 3. What is the acceleration of a body that starts from rest and reaches a speed of 20 m/s in 4 seconds? 5 m/s² 2 m/s² 10 m/s² 4 m/s² None 4. A body moving with a constant speed in a straight line is said to be in: Non-uniform motion Uniform motion Uniform acceleration Random motion None 5. In a distance-time graph, a straight horizontal line indicates: Constant speed No motion Increasing speed Decreasing speed None 6. If two cars are moving in opposite directions at speeds of 40 km/h and 60 km/h, what is their relative speed? 20 km/h 100 km/h 60 km/h 40 km/h None 7. Which of the following is a scalar quantity? Displacement Velocity Speed Acceleration None 8. What is uniform circular motion? Motion in a straight line at constant speed Motion in a circle at constant speed Motion in a circle at varying speed Motion in a straight line at varying speed None 9. What is the average velocity of an object that moves from point X to point Y, 100 meters away, in 20 seconds? 2 m/s 5 m/s 10 m/s 20 m/s None 10. Instantaneous speed is defined as: The speed at any given point in time The average speed over a period of time The total distance divided by the total time None of the above None 11. Newton's First Law of Motion is also known as the law of: Action and Reaction Inertia Acceleration Gravitation None 12. A train travels at a speed of 60 km/h. How much distance will it cover in 3 hours? 180 km 120 km 60 km 240 km None 13. In a velocity-time graph, a straight line parallel to the time axis indicates: Uniform acceleration Constant velocity Increasing velocity Decreasing velocity None 14. What is the SI unit of velocity? Meter per second (m/s) Kilometer per hour (km/h) Meter per hour (m/h) Kilometer per second (km/s) None 15. An object is said to have uniform acceleration if: Its velocity changes by unequal amounts in equal intervals of time Its velocity changes by equal amounts in equal intervals of time Its speed remains constant It moves in a circular path None 16. What is retardation? Negative velocity Negative displacement Negative acceleration Negative distance None 17. When two objects move in the same direction with the same speed, their relative velocity is: Equal to their speed Twice their speed Zero Half their speed None 18. According to Newton’s Second Law of Motion, the force acting on an object is equal to: The product of its mass and acceleration The product of its mass and velocity The product of its velocity and acceleration The product of its displacement and time None 19. What is the acceleration due to gravity for an object in free fall near the Earth's surface? $ \displaystyle \text{9}\text{.8 m/s}$ $ \displaystyle \text{9}\text{.8 m/}{{\text{s}}^{2}}$ $ \displaystyle \text{9}\text{.8 km/h}$ $ \displaystyle \text{9}\text{.8 m/h}$ None 20. Which of the following correctly differentiates between uniform motion and uniform acceleration? Uniform motion has constant speed; uniform acceleration has constant acceleration Uniform motion has constant acceleration; uniform acceleration has constant speed Uniform motion has constant speed; uniform acceleration has decreasing speed Uniform motion has increasing speed; uniform acceleration has constant acceleration None 21. What is the second equation of motion? $ \displaystyle v=\text{ }u\text{ }+\text{ }at$ $ \displaystyle s=ut+\frac{1}{2}a{{t}^{2}}$ $ \displaystyle {{v}^{2}}={{u}^{2}}+2as$ $ \displaystyle F=ma$ None 22. An object is said to be in motion if it: Changes its position with respect to its surroundings Does not change its position with respect to its surroundings Changes its mass Changes its shape None 23. What is the SI unit of acceleration? $ \displaystyle m/s$ $ \displaystyle m/{{s}^{2}}$ $ \displaystyle km/h$ $ \displaystyle m/{{h}^{2}}$ None 24. A car covers 150 km in 3 hours. What is its average speed? 50 km/h 45 km/h 60 km/h 55 km/h None 25. Displacement is: Always greater than or equal to distance Always less than or equal to distance The same as distance Always greater than distance None 26. The third equation of motion is: $ \displaystyle v=u+at$ $ \displaystyle s=ut+\frac{1}{2}a{{t}^{2}}$ $ \displaystyle {{v}^{2}}={{u}^{2}}+2as$ $ \displaystyle f=ma$ None 27. On a velocity-time graph, the area under the graph represents: Displacement Velocity Acceleration Speed None 28. An object is said to be at rest if: It does not change its position with respect to time It moves with constant velocity It moves with uniform acceleration It moves with variable speed None 29. If a cyclist travels 30 km in 2 hours, what is the average speed? 15 km/h 30 km/h 20 km/h 10 km/h None 30. When a body moves in a circular path, the direction of its velocity: Changes continuously Remains constant Changes alternately Becomes zero None 31. When a car slows down, its acceleration is: Positive Negative Zero Infinite None 32. On a distance-time graph, a curve represents: Accelerated and uniform motion Deaccelerted and non-uniform motion Either accelerated or deaccelerated motion Either stationary or non-uniform motion None 33. A person walks 10 km in 2 hours and then 5 km in 1 hour. What is the average speed? 5 km/h 10 km/h 15 km/h 20 km/h None 34. If a train travels at 80 km/h, how long will it take to cover a distance of 240 km? 3 hours 2 hours 4 hours 5 hours None 35. In linear motion, the path followed by an object is: Curved Circular Straight Zigzag None 36. An object moving with uniform motion has: Constant speed and changing direction Changing speed and constant direction Constant speed and constant direction Changing speed and changing direction None 37. What is the first equation of motion? $ \displaystyle v=u+at$ $ \displaystyle s=ut+\frac{1}{2}a{{t}^{2}}$ $ \displaystyle {{v}^{2}}={{u}^{2}}+2as$ $ \displaystyle f=ma$ None 38. What does a straight line inclined to the time axis on a displacement-time graph indicate? Constant velocity Accelerated motion Retarded motion No motion None 39. Newton's Third Law of Motion states: For every action, there is an equal and opposite reaction An object in motion stays in motion Force equals mass times acceleration The acceleration of an object is directly proportional to the net force None 40. A ball thrown upwards follows a curved path. This type of motion is called: Circular motion Rectilinear motion Projectile motion Rotational motion None 1 out of 40 Time's up