Comparing two trains — task. Physics CBSE Live product, Class 7 (2026-27).

Analyse the following data and answer the questions given below:

Time interval	Train X	Train Y
\(10:00\ –\ 10:10\)	\(20\ km\)	\(20\ km\)
\(10:10\ –\ 10:20\)	\(20\ km\)	\(15\ km\)
\(10:20\ –\ 10:30\)	\(20\ km\)	\(25\ km\)
\(10:30\ –\ 10:40\)	\(20\ km\)	\(15\ km\)

1. A student claims, “Train Y must be in uniform motion because it covers a total of \(75\ km\) in the four intervals.” Which observation from the table best disproves the student's claim?

Train Y covers a total distance of \(75\ km\).
Train Y covers \(20\ km\) during the first interval.
Train Y moves for a total of \(40\ minutes\).
Train Y covers different distances in equal \(10-minute\) intervals.

2. Suppose Train X and Train Y start together at the same position. Which train would have travelled farther after \(30\ minutes\)?

Train X, because its motion is uniform.
Train X, because it covers \(20\ km\) in every \(10-minute\) interval.
Train Y, because its distance increases during the third interval.
Both trains, because they travel for the same amount of time.

3. Student P: “Train X has uniform motion because it covers the same distance in every \(10-minute\) interval.”
Student Q: “Train Y also has uniform motion because it covers \(75\ km\) in \(40\ minutes\).”
Who has applied the concept correctly?

Both students
Only Student Q
Student P, because uniform motion requires equal distances in equal time intervals
Student Q, because total distance determines uniform motion

4. Which statement can be directly inferred by comparing Train X and Train Y?

Train X travels faster than Train Y during every \(10-minute\) interval.
Train Y travels faster than Train X during every \(10-minute\) interval.
Train X covers equal distances in equal intervals, whereas Train Y does not.
Train X changes its speed more frequently than Train Y.

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8. Comparing two trains

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