Equations

Question 1

State the formula linking average speed, distance moved and time taken

Answer 1

Speed = Distance / Time

Question 2

State the formula linking acceleration, change in velocity and time taken

Answer 2

Acceleration = (change in velocity) / time taken

Question 3

State the formula linking final speed, initial speed, acceleration and distance moved

Answer 3

v(2) = u(2) + 2as

Question 4

State the formula linking force, mass and acceleration

Answer 4

F = MA

Question 5

State the formula linking weight, mass and gravitational field strength

Answer 5

W = m x g

Question 6

State the formula linking momentum, mass and velocity

Answer 6

Momentum = mass x velocity

Question 7

State the formula linking force, change in momentum and time taken

Answer 7

Force = (change in momentum) / time taken

Question 8

State the formula linking the moment of a force and the perpendicular distance from the pivot

Answer 8

Moment = force x distance

Question 9

State the formula linking power, current and voltage

Answer 9

P = IV

Question 10

State the formula linking energy transferred, current, voltage and time

Answer 10

E = I x V x t

Question 11

State the formula linking voltage, current and resistance

Answer 11

V = IR

Question 12

State the formula linking charge, current and time

Answer 12

Q = I x t

Question 13

State the formula linking energy transferred, charge and voltage

Answer 13

E = VQ

Question 14

State the formula linking wave speed, frequency and wavelength

Answer 14

speed = frequency x wavelength

Question 15

State the formula linking frequency and time period

Answer 15

F = 1 / T

Question 16

State the formula linking refractive index, angle of incidence and angle of refraction

Answer 16

n = (sin i) / (sin r)

Question 17

State the formula linking critical angle and refractive index

Answer 17

sin c = 1 / n

Question 18

State the formula linking work done, force and distance moved

Answer 18

W = F x d

Question 19

State the formula linking gravitational potential energy, mass, gravitational field strength and height

Answer 19

GPE = m x g x h

Question 20

State the formula linking kinetic energy, mass and speed

Answer 20

KE = 1/2 x m x v(2)

Question 21

State the formula linking power, work done and time taken

Answer 21

P = W / t

Question 22

State the formula linking density, mass and volume

Answer 22

Density = mass / volume

Question 23

State the formula linking pressure, force and area

Answer 23

p = F / A

Question 24

State the formula for pressure difference

Answer 24

pressure difference = height x density x gravitational field strength

Question 25

State the formula linking change in thermal energy, mass, specific heat capacity and change in temperature

Answer 25

(delta)Q = m x c x (delta)T

Question 26

State the formula linking voltage, current and power (kind of)

Answer 26

V(p) x I(p) = V(s) x I(s)

Question 27

State the formula for orbital speed

Answer 27

Speed = (2 x (pi) x r) / T

Question 28

State the equation linking change in wavelength, reference wavelength, velocity of a galaxy and the speed of light

Answer 28

(Change in wavelength) / reference wavelength = v / c