Question

A thief is running away on a straight road on a jeep moving with a speed of 9 m/s. A police man chases him on a motor cycle moving at a speed of 10 m/s. If the instantaneous separation of jeep from the motor cycle is 100 m, how long will it take for the policemen to catch the thief

• A. 1 second
• B. 19 second
• C. 90 second
• D. 100 second

Answer 1

Answer: (D)

100 second

Answer 2

Relative speed of police with respect to thief

$= 10 - 9 = 1m ⥂ / ⥂ s$

Instantaneous separation = 100 m

Time = $\frac{\text{distance}}{\text{veclotiy}} = \frac{100}{1} = 100sec.$