Core Science - Equations ____ =

Question 1

Weight = ?

Answer 1

mass x gravitational field strength

Question 2

Work done = ?

Answer 2

force x distance (along line of action)

Question 3

Force applied to a spring = ?

Answer 3

spring constant x extension

Question 4

Distance travelled = ?

Answer 4

speed x time

Question 5

acceleration = ?

Answer 5

change in velocity
/
time taken

Question 6

resultant force = ?

Answer 6

mass x acceleration

Question 7

momentum = ?

Answer 7

mass x velocity

Question 8

Kinetic energy = ?

Answer 8

0.5 x mass x (velocity)^2

Question 9

gravitational potential energy = ?

Answer 9

mass x gravitational field strength x height

Question 10

power = ? (1)

Answer 10

energy transferred
/
time

Question 11

power = ? (2)

Answer 11

work done
/
time

Question 12

efficiency = ? (1)

Answer 12

useful output energy transfer
/
useful input energy transfer

Question 13

efficiency = ? (2)

Answer 13

useful power output
/
total power input

Question 14

wave speed = ?

Answer 14

frequency x wavelength

Question 15

charge flow = ?

Answer 15

current x time

Question 16

potential difference = ?

Answer 16

current x resistance

Question 17

(electrical) power = ? (1)

Answer 17

potential difference x

current

Question 18

(electrical) power = ? (2)

Answer 18

(current)^2 x resistance

Question 19

energy transferred = ? (1)

Answer 19

power x time

Question 20

energy transferred = ? (2)

Answer 20

charge flow x potential difference

Question 21

density = ?

Answer 21

mass
/
volume