Formulas Flashcards
Density
D=m/v
Mass
m = dv
Volume
v = m/d
Speed
s = d/t
Time
t = d/s
Distance
d = st
Find Pressure
when you have area and force
P = F/A
pressure = force/area
Find Force
when you have pressure and area
F = PA
Find force
when you have acceleration and mass
F = MA
Find Area
when you have pressure and force
A = F/P
Law of motion
Net force =?
F=MA
force = mass x acceleration
Volume of a Cuboid
V of a cuboid = lwh
Volume = length x width x height
Volume of a Cylinder
Volume of Cylinder = π r^2 h
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=?
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
When to use Pythagoras Theorem?
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
Formula to find the median average when there are a lot of items of data totalling an odd number?
(n + 1) /2
*n = total frequency
Formula to find the median average when there are a lot of items of data totalling an even number?
n/2
*n = total frequency
Area of a Square
A = s^2 (side length x side length)
Area of Rectangle
Area of Rectangle = length x width
Area of Triangle
Area of Triangle = 1/2 bh
Area of Parallelogram
A = bh
Surface Area of a Cuboid
area of a cuboid= 2lw + 2wh + 2lh
Area of a cube
area of a cube = 6a^2
Area of a prism
Area of prism = volume ÷ height
What is the perimeter?
The measure of the total length around the outside of a shape.
How to calculate percentage increase.
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
How to calculate percentage decrease.
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
What is the quadratic equation?
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/
What is the equation for any straight line on a graph?
y = mx + c
How do you determine how many degrees there are in a square, pentagon, hexagon….?
Count the sides and minus 2
(this shows how many triangles there are within the shape) then multiply by 180 degrees.
