The car covers a distance <em>d</em> after time <em>t</em> of
<em>d</em> = (2.8 m/s²) <em>t</em>²
Solve for <em>t</em> when <em>d</em> = 69 m:
69 m = (2.8 m/s²) <em>t</em>²
<em>t</em>² = (69 m) / (2.8 m/s²)
<em>t</em> ≈ 4.96 s
Answer:
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100 divide by 400 times 100 percent
