Question

A theif snatches a purse of a lady and move with the speed of 40m/s on a motorbike a police man which was 200m away from the incident it starts moving at the same time with the bike what must be the speed of police'bike in order to catch the thief in 20 seconds???​

Answer 1

Answer:

B) 1.5 m/s2 is the correct answer

Explanation:

Procedure to calculate answer-step 1 : find displacement of thief in 30 seconds

Step 2- if the total time required is 30 seconds and the policeman takes 10 seconds to start his bike then it means that he does motion for only 20 seconds

Step 3- Take initial speed (u) = 0m/s and Displacement (S)= 300 m ( same as displacement of thief) and time (t) = 20 s

Step 4- use the following equation to find answer:

S=ut+1/2at^2