Question : The distance between two particles moving towards each other is decreasing at the rate of 6𝑚/𝑠𝑒𝑐. If these particles travel with same speeds and in the same direction, then the separation increase at the rate of 4𝑚/𝑠𝑒𝑐. The particles have speeds as
(A) 5𝑚/𝑠𝑒𝑐 : 1𝑚/𝑠𝑒𝑐
(B) 4 𝑚/𝑠𝑒𝑐 : 1𝑚/𝑠𝑒𝑐
(C) 4 𝑚/𝑠𝑒𝑐 : 2𝑚/𝑠𝑒𝑐
(D) 5 𝑚/𝑠𝑒𝑐 : 2𝑚/𝑠𝑒c
Answer : option (A)
Solution :
