Find the value of s when $u = 12$, $a = 10$ and $t = 4$ - OCR - GCSE Maths - Question 4 - 2017 - Paper 1

Question 4

Find the value of s when $u = 12$, $a = 10$ and $t = 4$.
$s = ut + \frac{1}{2}at^2$
Worked Solution & Example Answer:Find the value of s when $u = 12$, $a = 10$ and $t = 4$ - OCR - GCSE Maths - Question 4 - 2017 - Paper 1
Calculate the contribution of $ut$

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Substituting the values into the equation, we first calculate the term ut:
ut=12×4=48
Calculate the contribution of $\frac{1}{2}at^2$

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Next, we calculate the term 21at2:
21⋅10⋅(4)2=5⋅16=80
Combine the results to find $s$

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Finally, we combine both contributions to find the value of s:
s=48+80=128
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