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
B
19s
C
90s
D
100 s

Solution

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

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