Deriving and using formulae Y9

Given v = u + at, make u the subject of the formula.

• u = v + at

• u = at - v

• u = v - at

• u = - (v - at)

Given v = u + at, work out v when u = 2, a = 4 and t = 3

(a)  

Given v = u + at, make t the subject of the formula.

• $t=\frac{v+u}{a}$

• $t=\frac{u-v}{a}$

• $t=\frac{v-u}{a}$

• $t=a\left(v-u\right)$

Given v = u + at, work out u when v = 80, a = 4 and t = 15

(a)  

Given v = u + at, make a the subject of the formula.

•  $a=\frac{v-u}{t}$ 

•  $a=\frac{u-v}{t}$ 

•  $a=\frac{v+u}{t}$ 

•  $a=t\left(v-u\right)$ 

Given v = u + at, work out t when v = 80, u = 10 and a = 7

(a)  

Using the formula F = ma to work out the value of F when m = 25 and a = - 4

(a)  

Using the formula F = ma to work out the value of m when F = 34 and a = 2.5

(a)  

Rearrange the formula A = a(1 + pt) to make a the subject.

• $a=A\left(\ 1+pt\right)$

• $a=\frac{1+pt}{A}$

• $a=\frac{A}{1+pt}$

• $a=\frac{1-pt}{A}$

Rearrange the formula   $BMI=\frac{m}{h^2}$   to make m the subject.

•  $m=BMI\times h^2$ 

•  $m=\frac{BMI}{h^2}$ 

•  $m=\frac{h^2}{BMI}$ 

• None of the above