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Question
Make s the subject of the formula v2 = u2 + 2as. Find s when u = 3, a = 2 and v = 5.
Solution
v2 = u2 + 2as
⇒ v2 - u2 = 2as
⇒ s = `("v"^2 - "u"^2)/(2"a")`
Substituting u = 3, a = 2 and v = 5, we get
s = `(5^2 - 3^2)/(2 xx 2)`
= `(25 - 9)/(4)`
= `(16)/(4)`
= 4.
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