Equations

Question 0

Acceleration equation

Answer 0

Acceleration(m/s^2) = change in velocity / time

Question 1

Speed equation

Answer 1

Speed(m/s) = distance / time

Question 2

Weight equation

Answer 2

Weight(N) = mass * gravity (10)

Question 3

Density equation

Answer 3

Density (g/cm^3) = mass / volume

Question 4

Force equation

Answer 4

Force(N) = mass * acceleration

Question 5

Hooke’s law

Answer 5

Force(N) = constant * extension
F = kx

Question 6

Moment equation

Answer 6

Moment(Mn) = force * distance

Question 7

Work done equation

Answer 7

Work done(J) = force * distance

Question 8

Power equation

Answer 8

Power(W) = energy / time

Question 9

Pressure equation

Answer 9

Pressure(Pa) = force / area

Question 10

Thermal capacity (energy transferred equation)

Answer 10

Energy transferred = mass * specific heat capacity * change in temperature

Question 11

Wave speed

Answer 11

Wave speed(m/s) = frequency * wavelength

Question 12

Refractive index

Answer 12

Refractive index = speed to light in a vacuum / speed of light in the medium

Question 13

Charge equations

Answer 13

Charge(C) = current * time

Charge(C) = energy / voltage

Question 14

Resistance equation

Answer 14

Resistance(Ohms) = Potential difference / current

R = V / I

Question 15

Power equation(circuits)

Answer 15

Power(W) = potential difference * current

P = IV

Question 16

Energy equations(circuits)

Answer 16

Energy(J) = power * time

Energy = voltage * charge

Question 17

Resistance in series

Answer 17

Total resistance = resistance + resistance etc…

Question 18

Resistance in parallel

Answer 18

Total resistance = 1 / resistance in circuit

Question 19

Gravitational potential energy

Answer 19

GPE(J) Mass * gravity * height

Question 20

Kinetic energy

Answer 20

Kinetic energy(J) = 1/2mass * velocity^2

KE = 1/2MV^2

Question 21

Pressure in liquid

Answer 21

Pressure = density * gravity * height

p=dgh