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Question

A body A start from rest with an acceleration a1. After 2 seconds, another body B start from rest with an acceleration a2. if they travel equal distance in the 5th second, after the start of A, then the ratio a1:a2

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Solution

We have,

s=u+a2(2n1)

u=0

a12(2(5)1)=a22(2(3)1)

9a1=5a2

a1a2=59

a1:a2=5:9

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