equations deck Flashcards

1
Q

average speed, distance and time

A

speed = distance ÷ timespeed = distance⁄time

2
Q

force, mass and acceleration

A

force = mass x acceleration

3
Q

acceleration, change in velocity and time taken

A

acceleration = change in velocity ÷ time taken

4
Q

density, mass and volume

A

density = mass ÷ volume

5
Q

work done, force and distance moved

A

work done = force x distance moved

6
Q

energy transferred and work done

A

energy transferred = work done

7
Q

kinetic energy, mass and speed

A

kinetic energy = 1/2 x mass x speed2

8
Q

gravitational potential energy, mass, g and height

A

gravitational potential energy = mass x g x height

9
Q

weight, mass and gravitational field strength

A

weight = mass x gravitational field strength

10
Q

pressure, force and area

A

pressure = force ÷ area

11
Q

moment, force and perpendicular distance from pivot

A

moment = force x perpendicular distance from pivot

12
Q

charge, current and time

A

charge = current x time

13
Q

voltage, current and resistance

A

voltage = current x resistance

14
Q

wave speed, frequency and wave length

A

wave speed = frequency x wave length

15
Q

refractive index, angle of incidence, angle or refraction

A

n = sin i ÷ sin r

16
Q

refractive index and critical angle

A

n = 1 ÷ sin c

17
Q

efficiency, useful energy output and total energy input

A

efficiency = useful energy output ÷ total energy input

18
Q

pressure difference, depth, density and g

A

pressure difference = density x g x depth