Equation

Question 0

Speed on distance time graph

Answer 0

Gradient

Question 1

Speed

Answer 1

Total distance / time taken

Question 2

Acceleration

Answer 2

A = (v-u )/t

Question 3

Weight

Answer 3

Mass x10

Question 4

Density

Answer 4

Mass / volume

Question 5

Extension

Answer 5

Force = spring constant x extension

Question 6

Resultant force

Answer 6

Mass x acceleration

Question 7

Moment

Answer 7

Force x perpendicular distance to pivot

Question 8

Energy efficiently

Answer 8

Useful output energy / total input energy

Question 9

Work done

Answer 9

Work = force x distance

Question 10

GPE

Answer 10

Mass x gravity x height

Question 11

KE

Answer 11

0.5 x mass x speed ^2

Question 12

Power

Answer 12

Work done / time taken

Energy / time

Question 13

Pressure

Answer 13

Force / area

Pressure x volume = constant

Question 14

Pressure in liquid

Answer 14

Height x density x gravity

Question 15

Thermal capacity

Answer 15

E / ( difference in temperature)

Question 16

Specific heat capacity

Answer 16

E/ m x change in temperature

Question 17

Specific latent heat

Answer 17

Energy / mass

Question 18

Speed of wave

Answer 18

Wavelength x frequency

Question 19

Refractive index

Answer 19

Sin I / sin r

Speed of light in air / speed of light in medium

Question 20

Power ( electricity)

Answer 20

I ^2 x R

Question 21

Voltage

Answer 21

IR ; căn PR ; P/I ; W/Q

Question 22

Charge

Answer 22

Q = I x t

Question 23

Energy ( electricity)

Answer 23

V x I x t

Question 24

Critical angle

Answer 24

Sin -1 x (1/ refractive index)