If an object is moving at $1 \frac{m}{s}$ $1 m/s$ and accelerates to $12 \frac{m}{s}$ $12 m/s$ over 3 seconds, what was the object's rate of acceleration?

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Answer 1 · 2015-12-19T21:30:25

$a \approx 4 {m/s}^{2}$ $a~~4"m/s"^2"$

$a=(v_f-v_i)/(Delta t)$ , where $v_f="12 m/s"$ , $v_i="1 m/s"$ , $Delta t="3 s"$ .

$a=(12"m/s"-1"m/s")/(3"s")$

$a=(11"m/s")/(3"s")=11/3 "m/s"^2~~"4 m/s"^2"$ (rounded to one significant figure)

If an object is moving at 1 m/s1ms1 m/s and accelerates to 12 m/s12ms12 m/s over 3 seconds, what was the object's rate of acceleration?