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Question

By observing the adjoining distance versus time graph, find:

Speed between 2 to 4 seconds


A
10 m/s
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B
20 m/s
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C
5 m/s
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D
0
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Solution

The correct option is B 20 m/s
Speed is distance covered in unit time.
Between 2 to 4 seconds position is changed from 40m to 80m.
Speed = DistanceTime​​​ = 402 = 20 m/s​​​​.
 

Mathematics

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