Class 9 Science Chapter 4: Describing Motion Around Us — practice questions with answers
Free practice for Class 9 Science, Chapter 4: Describing Motion Around Us. Try the solved questions below, then take a free test with instant marking and explanations.
58 questions19 easy, 26 medium, 13 hardNCERT · CBSE · State boards
Sample questions with solutions
Q1. What two things must be stated to describe the position of an object?
- Its distance and direction from a reference point
- Its colour and size
- Its speed only
- Its mass and weight
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Answer: A. Its distance and direction from a reference point
Why: On a straight line, direction is shown by + or −. [p.49–50]
Why: On a straight line, direction is shown by + or −. [p.49–50]
Q2. An athlete runs 100 m forward and then 60 m back along a straight track. What is the total distance travelled (m)?
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Answer: 160 (± 0)
Why: 100 + 60 = 160 m. [p.51]
Why: 100 + 60 = 160 m. [p.51]
Q3. For the same athlete (100 m forward, 60 m back), what is the magnitude of the displacement (m)?
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Answer: 40 (± 0)
Why: 100 − 60 = 40 m in the forward direction. [p.51]
Why: 100 − 60 = 40 m in the forward direction. [p.51]
Q4. Which quantity has both magnitude and direction?
- Velocity
- Speed
- Distance
- Time
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Answer: A. Velocity
Why: Speed and distance have only magnitude. [p.52–53]
Why: Speed and distance have only magnitude. [p.52–53]
Q5. An object covers equal distances in equal intervals of time along a straight line. Its motion is ______.
- uniform
- non-uniform
- circular
- at rest
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Answer: A. uniform
Why: It moves at constant speed. [p.52]
Why: It moves at constant speed. [p.52]
Q6. A car travels 150 km in 3 hours. What is its average speed (km/h)?
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Answer: 50 (± 0)
Why: 150 ÷ 3 = 50 km/h. [p.52]
Why: 150 ÷ 3 = 50 km/h. [p.52]
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Frequently asked questions
How many practice questions are there for Class 9 Science Chapter 4: Describing Motion Around Us?
58 questions (19 easy, 26 medium, 13 hard). A few are solved on this page; the free test shows the answer and explanation for every question after you submit.
Is this chapter from the NCERT book?
Yes — it follows the NCERT Class 9 Science syllabus, used by CBSE and many state boards.