Question

. If u = 10 m/s, t = 4s and S = 100 m, then acceleration is​

Answer 1

Answer:

Calculating acceleration involves dividing velocity by time — or in terms of SI units, dividing the meter per second [m/s] by the second [s]. Dividing distance by time twice is the same as dividing distance by the square of time. Thus the SI unit of acceleration is the meter per second squared .

Explanation:

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Answer 2

Answer:

$s = ut \: + \frac{1}{2} \times a {t}^{2} \\ 100 = 10 \times 4 + \frac{1}{2} \times a {4}^{2} \\ 100 = 40 + 8a \\ \\ 100 - 40 = 8a \\ \\ 8a = 60 \\ \\ a = \frac{60}{8} \\ \\ a = 7.5 \: m {s}^{ - 2}$

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