Question : A body 𝐴 starts from rest with an acceleration 𝑎1. After 2 seconds, another body 𝐵 starts from rest with an acceleration 𝑎2. If they travel equal distances in the 5th second, after the start of A, then the ration 𝑎1: 𝑎2 is equal to
(A) 5:9
(B) 5:7
(C) 9 ∶ 5
(D) 9 ∶ 7
Answer : option (A)
Solution :
