Two unequal masses ' $\mathrm{A}$ ' and ' $\mathrm{B}$ ' moving along a straight line are brought to rest by…
Two unequal masses ' $\mathrm{A}$ ' and ' $\mathrm{B}$ ' moving along a straight line are brought to rest by equal retarding forces. If 'A' takes double the time taken by 'B' to come to rest and 'A' travels $\frac{2}{3} \mathrm{rd}$ of the distance covered by ' $\mathrm{B}$ ' before coming to rest, then the ratio of masses of ' $\mathrm{A}$ ' and ' $\mathrm{B}$ ' is _________ .