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- Uniform motion covers equal distances in equal time intervals .
- Non-uniform motion covers unequal distances in equal time intervals .
NCERT Table 8.3 compares two trains, X and Y, between 10:00 AM and 11:00 AM:
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Train X
Covers 20 km in every 10-minute interval.
Equal distances in equal times — uniform motion . -
Train Y
Covers different distances (15, 20, 25 km) in equal 10-minute intervals.
Unequal distances in equal times — non-uniform motion .
Why average speed matters: Uniform motion is rare in daily life. That is why average speed is used.
๐ NCERT Question 7
Data for an object covering distances in different intervals of time are given in the following table. If the object is in uniform motion, fill in the gaps in the table.
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๐ NCERT Question 8 (Multi-concept)
โก This question covers multiple concepts. Make sure you have understood all sections above before attempting.
A car covers 60 km in the first hour, 70 km in the second hour, and 50 km in the third hour. Is the motion uniform? Justify your answer. Find the average speed of the car.
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๐ NCERT Question 9
Which type of motion is more common in daily life — uniform or non-uniform? Provide three examples from your experience to support your answer.
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๐ NCERT Question 10 (Multi-concept)
โก This question covers multiple concepts. Make sure you have understood all sections above before attempting.
Data for the motion of an object are given in the following table. State whether the speed of the object is uniform or non-uniform. Find the average speed.
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