Physics Formula

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Physics Equation List :Form 4
Introduction to Physics
Relative Deviation

Relative Deviation = Mean Deviation ×100% Mean Value
Prefixes Prefixes Tera Giga Mega Kilo deci centi milli micro nano pico Units for Area and Volume 1 m = 102 cm 1 m = 10 cm
2 4 2

Value 1 000 000 000 000 1 000 000 000 1 000 000 1 000 0.1 0.01 0.001 0.000 001 0.000 000 001 0.000 000 000 001

Standard form 1012 109 106 103 10-1 10-2 10-3 10-6 10-9 10-12

Symbol T G M k d c m μ n p

(100 cm) (10,000 cm ) (1,000,000 cm3)
2

1 cm

= 10-2 m

(

1 m) 100

1 m3 = 106 cm3

1 cm2 = 10-4 m2

(

1 m2 ) 10,000 1 m3 ) 1,000,000

1 cm3 = 10-6 m3

(

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Average Speed

Force and Motion
Average Speed = Total Distance Total Time

Velocity

v= s t
Acceleration

v = velocity s = displacement t = time

(ms-1) (m) (s)

a=

v−u t

a = acceleration v = final velocity u = initial velocity t =time for the velocity change

(ms-2) (ms-1) (ms-1) (s)

Equation of Linear Motion
Linear Motion

Motion with constant velocity

Motion with constant acceleration

Motion with changing acceleration

v=

s t

v = u + at 1 s = (u + v)t 2

Using Calculus (In Additional Mathematics Syllabus)

1 s = ut + at 2 2 v 2 = u 2 + 2as u = initial velocity v = final velocity a = acceleration s = displacement t = time (ms-1) (ms-1) (ms-2) (m) (s)

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Ticker Tape
Finding Velocity:

velocity =

s number of ticks × 0.02s
1 tick = 0.02s

Finding Acceleration:

v−u a= t a = acceleration v = final velocity u = initial velocity t = time for the velocity change (ms-2) (ms-1) (ms-1) (s)

Graph of Motion Gradient of a Graph The gradient 'm' of a line segment between two points and is defined as follows: Gradient, m = or m= Δy Δx Change in y coordinate, Δy Change in x coordinate, Δx

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