# Equations Flashcards

1
Q

average speed, distance travelled and time taken

A

speed = distance travelled ÷ time taken

speed = distance travelled ⁄ time taken

2
Q

force, mass and acceleration

A

force = mass x acceleration

F = ma

3
Q

acceleration, change in velocity and time taken

A

acceleration = change in velocity ÷ time taken

a = (v-u) / t

4
Q

momentum, mass and velocity

A

momentum = mass x velocity

p=mv

5
Q

density, mass and volume

A

density = mass ÷ volume

6
Q

work done, force and distance moved

A

work done = force x distance moved (in direction of force)

7
Q

energy transferred and work done

A

energy transferred = work done

8
Q

kinetic energy, mass and speed

A
9
Q

gravitational potential energy, mass, g and height

A

gravitational potential energy = mass x g x height

GPE = mgh

10
Q

weight, mass and gravitational field strength

A

weight = mass x gravitational field strength

W = mg

11
Q

pressure, force and area

A

pressure = force ÷ area

12
Q

moment, force and perpendicular distance from pivot

A

moment = force x perpendicular distance from pivot

13
Q

charge, current and time

A

charge = current x time

Q = It

14
Q

voltage, current and resistance

A

voltage = current x resistance

V=IR

15
Q

wave speed, frequency and wavelength

A

wave speed = frequency x wavelength

16
Q

primary voltage, secondary voltage, primary turns and secondary turns

A
17
Q

refractive index, angle of incidence, angle or refraction

A

n = sin i ÷ sin r

18
Q

refractive index and critical angle

A
19
Q

efficiency, useful energy output and total energy input

A
20
Q

pressure difference, density, gravity and depth difference

A

pressure difference = density x g x depth difference

21
Q

input current, input voltage, output current and output voltage

A

input current x input voltage = output current x output voltage

IIVI = IOVO

22
Q

Boyle’s Law equation

pressure 1, pressure 2, volume 1 and volume 2?

A

P1V1 = P2V2