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 initial 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

The correct option is D 100 second

Relative speed of police with respect to thief
= 10 -9 = 1 m/s
Initial separaton = 100 m
Time = $\frac{distance}{velocity}$ = $\frac{100}{1}$ = 100 sec