Formulas Flashcards

1
Q

Density

A

D=m/v

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2
Q

Mass

A

m = dv

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3
Q

Volume

A

v = m/d

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4
Q

Speed

A

s = d/t

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5
Q

Time

A

t = d/s

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6
Q

Distance

A

d = st

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7
Q

Find Pressure
when you have area and force

A

P = F/A
pressure = force/area

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8
Q

Find Force
when you have pressure and area

A

F = PA

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9
Q

Find force
when you have acceleration and mass

A

F = MA

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10
Q

Find Area
when you have pressure and force

A

A = F/P

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11
Q

Law of motion
Net force =?

A

F=MA

force = mass x acceleration

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12
Q

Volume of a Cuboid

A

V of a cuboid = lwh

Volume = length x width x height

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13
Q

Volume of a Cylinder

A

Volume of Cylinder = π r^2 h

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14
Q

Where a is constant acceleration, u is initial velocity, v is final velocity, s is displacement from the position when t=0 and t is time taken:

v=?

A

Where a is constant acceleration, u is initial velocity, v is final velocity, s is displacement from the position when t=0 and t is time taken:

v=u+at

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15
Q

When to use Pythagoras Theorem?

A

Use pythagoras theorem to find the hypotenuse (longest) side of a right angled triangle when the longest side is opposite the right angle.

a^2 + b^2 = c^2

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16
Q

Formula to find the median average when there are a lot of items of data totalling an odd number?

A

(n + 1) /2

*n = total frequency

17
Q

Formula to find the median average when there are a lot of items of data totalling an even number?

A

n/2

*n = total frequency

18
Q

Area of a Square

A

A = s^2 (side length x side length)

19
Q

Area of Rectangle

A

Area of Rectangle = length x width

20
Q

Area of Triangle

A

Area of Triangle = 1/2 bh

21
Q

Area of Parallelogram

A

A = bh

22
Q

Surface Area of a Cuboid

A

area of a cuboid= 2lw + 2wh + 2lh

23
Q

Area of a cube

A

area of a cube = 6a^2

24
Q

Area of a prism

A

Area of prism = volume ÷ height

25
Q

What is the perimeter?

A

The measure of the total length around the outside of a shape.

26
Q

How to calculate percentage increase.

A

percentage increase = increase ÷ original number × 100

a) work out the difference
between the two numbers being compared
b) divide the increase by the original number and multiply the answer by 100

27
Q

How to calculate percentage decrease.

A

percentage decrease = decrease ÷ original number × 100

a) work out the difference between the two numbers being compared
b) divide the decrease by the original number and multiply the answer by 100

28
Q

What is the quadratic equation?

A

Quadratics are algebraic expressions that include the term, x^2, in the general form, ax^2 + bx + c = 0

On the foundation course, any quadratic equation you’re expected to solve will always have
a = 1 with all terms on one side and a zero on the other.

https://mmerevise.co.uk/gcse-maths-revision/solving-quadratics-factoring/

29
Q

What is the equation for any straight line on a graph?

A

y = mx + c

30
Q

How do you determine how many degrees there are in a square, pentagon, hexagon….?

A

Count the sides and minus 2
(this shows how many triangles there are within the shape) then multiply by 180 degrees.