equations to learn

Question 1

distance travelled*

Answer 1

average speed x time

Question 2

acceleration*

Answer 2

final velocity - initial velocity
—————————————
time

Question 3

Force*

Answer 3

mass x acceleration

Question 4

Weight*

Answer 4

mass x gravitational field strength

Question 5

Gravitational potential energy*

Answer 5

mass x gravitational field strength x distance

Question 6

Kinetic energy*

Answer 6

1/2 x mass x velocity2

Question 7

momentum*

Answer 7

mass x velocity

Question 8

wave velocity*

2 equations

Answer 8

frequency x wavelength

distance/time

Question 9

efficiency*

Answer 9

useful energy out
———————-
total energy in

Question 10

work done

Answer 10

force x distance moved in direction of force

Question 11

movement

Answer 11

force x distance normal to the direction of the force

Question 12

energy transferred

Answer 12

charge x potential difference

Question 13

potential difference

Answer 13

current x resistance

Question 14

power

3 equations

Answer 14

current x potential difference
amps2 x resistance
work done or energy transfered/ time

Question 15

charge

Answer 15

current x time

Question 16

density

Answer 16

mass
———
volume

Question 17

pressure

Answer 17

force
——
area

Question 18

force

Answer 18

spring constant x extension