Question

400=0(20)+1/2(a)(400)² value of a?​

Answer 1

Answer:

$0 \times 20 + \frac{1}{2} \times a \times 400 \times 400 = 400$

$0 + a \times 80000 = 400$

$80000a = 400 \\ a = \frac{400}{80000} = \frac{4}{800} = \frac{1}{200}$

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