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Question

A thief is running away on a straight road with a speed of $$9  \ ms^{-1}$$. A police man chases him on a jeep moving at a speed of $$10 \  ms^{-1}$$ If the instantaneous separation of the jeep from the motorcycle is 100 m, how long will it take. for the police man to catch the thief?


A
1s
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B
19s
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C
90s
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D
100 s
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Solution

The correct option is D 100 s
Police man is advancing with a speed of 1 m/s (difference between the speeds)
Distance between the two= 100 m
Hence, time = 100/1= 100 s

Physics

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