Question

A body A starts from rest with an acceleration . After 2 seconds, another body B starts from rest with an acceleration . If they travel equal distances in the 5^th second, after the start of A, then the ration is equal to

• A. 5 : 9
• B. 5 : 7
• C. 9 : 5
• D. 9 : 7

Answer 1

Answer: (A)

5 : 9

Answer 2

Time taken by body

Accelerations of body

Time taken by body

Accelerations of body

Distance covered by first body in 5^th seconds after its start.

Distance coveted by the second body in the 3^rd second after its start,

Since

$\therefore$