NCERT Solution
Class 7
Science
Motion and Time
which of the following distance time graphs shows...

Question:
Which of the following distance-time graphs shows a truck moving with speed which is not constant?

Answer:

Graph 1^st is not correct because this shows the constant speed of the truck which is represented by the straight line.
Graph 2^nd is not correct because the distance/ time graph shows a line that is parallel along the time axis. This shows that truck is not moving.
Graph 4^th is not correct because the distance/ time graph indicates that the truck is moving with a constant speed with the same interval of time.
Graph 3^rd is correct.

Because in the distance/ time graph, a curved line indicates that the truck is moving with a variable speed with respect to time.

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Question:
Which of the following distance-time graphs shows a truck moving with speed which is not constant?

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Question: Which of the following distance-time graphs shows a truck moving with speed which is not constant?

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Question:
Which of the following distance-time graphs shows a truck moving with speed which is not constant?