Formulas Physic

Question 1

Relationship between average speed, distance moved and time taken

Answer 1

S = D/ T

Question 2

Relationship between force, mass and acceleration

Answer 2

F=MxAcc

Question 3

Relationship between acceleration, change in velocity and time taken

Answer 3

A = change in velocity/T

Question 4

relationship between momentum, mass and velocity

Answer 4

momentum = MxV

Question 5

Relationship between density, mass and volume

Answer 5

density = m/v

Question 6

relationship between work done, forced and distanced moved

Answer 6

Work done = f x d

Question 7

energy relationship 1)Work done

Answer 7

energy transferred = work done

Question 8

energy relationship
2)(kinetic) (mass) (speed)

Answer 8

KE = 1/2 x m x s

Question 9

energy relationship
3) (GPE) (mass) (g) (height)

Answer 9

GPE =m x g x h

Question 10

relationship between mass, weight and GPS

Answer 10

weight = m x GPS

Question 11

relationship between an applied force, area which it acts and resulting pressure

Answer 11

pressure = f/area

Question 12

relationship between moment of a force and its perpendicular distance from pivot

Answer 12

moment = f x perpendicular distance from the pivot

Question 13

relationship between charge, current, voltage, resistance, energy and power

Answer 13

charge = current x time
voltage = current x resistance
electrical power =voltage x current
energy transferred = charge x voltage

Question 14

relationship between speed, frequency and wavelength of a wave

Answer 14

wave speed = frequency x wavelength

Question 15

relationships between turns and voltage for a transformer

Answer 15

output(secondary) voltage
=
primary turns
——————–
secondary turns

Question 16

relationship between refractive index, angle of incidence and angle of refraction

Answer 16

. sin i
n = ————–
sin r

Question 17

relationship between refractive index and critical angle

Answer 17

• 1
  sin c = ——
  n

Question 18

the relationship for efficiency

Answer 18

. useful E output
Eff = ——————– x100
total E output