Question

how to solve this question please tell in detail

Answer 1

step by step explanation

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Answer 2

Let x1 be the distance covered in t1 seconds

20=x1/t1

Similarly, 30=x2/t2

x1=x2=X/2

t1=X/40,t2=X/60

Vavg=x1+x2/(t1+t2)=24m/s

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