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Formula use

KS3 Maths Higher Questions – Formula use

1) If v = IR, find v when I = 0.98 and R = 28.

V =

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2) If a = , find b when a = 84 and h = 6

b =

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3) When v = u + at, t = 10, u = 7.8 and v = 105.8. What is a?

a =

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4) When v = ut + 2as, v = 8.5, t = 0.8 , u = 3.5, and a = 5.7. what is s?

s =

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5) Y – a = m(x – b)

a)What is x when y = 8, a = 7, m = 9 and b = 12? X =

b)What is y when a = 4, m = 12, x = 3 and b = 8? Y =

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6) 5n = x – b

a) What is n when x = 98 and b = 13? n =

b) What is x when n = 21 and b = 2? x =

c) What is b when n = 4 and x = 54? b =

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