Equations

Question 1

Equation linking: Average speed, distance moved and time taken

Answer 1

Average speed = distance moved/time taken

Question 2

Equation linking acceleration, velocity and time taken

Answer 2

Acceleration = Change in velocity/time taken
a = v-u/t

Question 3

Equation linking Force, Mass and Acceleration

Answer 3

Force = Mass X Acceleration
F=ma

Question 4

Equation linking weight, mass and gravitational feild strength

Answer 4

Weight = mass X gravitational field strength
W=mg

Question 5

Equation linking power, current and voltage

Answer 5

Power = Current X Voltage
P = IV

Question 6

Equation linking energy transferred, current, voltage and time

Answer 6

Energy transferred = Current X Voltage X Time
E=IxVxT

Question 7

Equation linking voltage, current and resistance

Answer 7

Voltage = Current X Resistance
V=IR

Question 8

Equation linking charge, current and time

Answer 8

Charge = Current X Time
Q=i x t

Question 9

Equation linking energy transferred, charge and voltage

Answer 9

Energy transferred = Charge X Voltage
E = Q x V

Question 10

Equation linking wave speed, frequency and wave length

Answer 10

Wave speed = frequency X wavelength

Question 11

Equation linking angle of incidence and angle of reflection

Answer 11

Angle of incidence = angle of reflection

Question 12

Equation linking refractive index, angle of incidence and angle of refraction

Answer 12

Refractive index = sin (angle of incidence)/ sin (angle of refraction)

Question 13

Equation linking refractive index and critical angle

Answer 13

sin (critical angle) = 1/refractive index

Question 14

Equation linking work done, force and distance moved

Answer 14

Work done = force X distance moved

Question 15

Equation linking energy transferred, force and distance

Answer 15

Energy transferred = Force X Distance

Question 16

Equation linking GPE, mass, height and gravitational field strength

Answer 16

GPE = mass X gravitational feild strength X height

Question 17

Equation linking KE, mass and velocity2

Answer 17

Kinetic energy = 0.5 X mass X velocity squared

Question 18

Equation linking Power, Work done and time taken

Answer 18

Power = work done / time taken

Question 19

Equation linking density, mass and volume

Answer 19

Density = mass/volume

Question 20

Equation linking pressure, fore and area

Answer 20

Pressure = Force / Area

Question 21

Equation linking pressure difference, density, height and gravitational field strength

Answer 21

Pressure difference = density X height X gravitational field strength

Question 22

Equation linking change in thermal energy, mass, specific heat capacity and change in temp

Answer 22

Thermal energy = mass X specific heat capacity X change in temp

Question 23

Equation linking pressure and temperature

Answer 23

P1/T1 = P2/T2

Question 24

Equation linking orbital speed, orbital radius and time period

Answer 24

Orbital speed = 2 X pie X orbital radius / time period