physics

Question 1

kinetic energy formula

Answer 1

1/2 x mass x speed^2

Question 2

gravitation potential energy formula

Answer 2

mass x gravitational field strength x height

Question 3

power formula (energy)

Answer 3

work done / time taken = energy transferred / time taken

Question 4

efficiency formula

Answer 4

useful energy output / total energy output

Question 5

charge flow formula

Answer 5

charge flow = current x time

Question 6

potential difference formula

Answer 6

potential difference = current x resistance

Question 7

total resistance formula

Answer 7

resistance of component 1 + resistance of component 2

Question 8

power formula (electricity)

Answer 8

power = current x potential difference

Question 9

power formula (electricity 2)

Answer 9

power = (current)^2 x resistance

Question 10

energy transferred formula (electricity)

Answer 10

energy transferred = power x time

Question 11

energy transferred formula (electricity 2)

Answer 11

energy transferred = charge flow x potential difference

Question 12

density formula

Answer 12

density = mass / volume

Question 13

weight formula

Answer 13

weight = mass × gravitational field strength

Question 14

work done formula

Answer 14

work done = force × distance

Question 15

force formula

Answer 15

force = spring constant x extension

Question 16

moment of a force formula

Answer 16

moment of a force = force x distance

Question 17

pressure formula

Answer 17

pressure = force normal to a surface / area of that surface

Question 18

distance travelled formula

Answer 18

distance travelled = speed x time

Question 19

acceleration formula

Answer 19

acceleration = change in velocity / time taken

Question 20

resultant force formula

Answer 20

resultant force = mass x acceleration

Question 21

momentum formula

Answer 21

momentum = mass x velocity

Question 22

wave speed formula

Answer 22

wave speed = frequency x wavelength