Equations // Amber

Question 1

Weight

Answer 1

mass x gravitational field strength

Question 2

Force Applied To A Spring

Answer 2

spring constant x extension

Question 3

Acceleration

Answer 3

change in velocity / time taken

Question 4

Momentum

Answer 4

mass x velocity

Question 5

Gravitational Potential Energy

Answer 5

mass x gravitational field strength x height

Question 6

Power

Answer 6

work done / time

Question 7

Efficiency

Answer 7

useful power output x total power output

Question 8

Charge Flow

Answer 8

current x time

Question 9

Energy Transferred

Answer 9

power x time

Question 10

Density

Answer 10

mass / volume

Question 11

Work Done

Answer 11

force x distance (along the line of action of the force)

Question 12

speed x time

Answer 12

Distance Travelled

Question 13

mass x acceleration

Answer 13

Resultant Force

Question 14

0.5 x mass x (speed)2

Answer 14

Kinetic Energy

Question 15

useful output energy transfer / useful input energy transfer

Answer 15

Efficiency

Question 16

frequency x wavelength

Answer 16

Wave Speed

Question 17

current x resistance

Answer 17

Potential Difference

Question 18

charge flow x potential difference

Answer 18

Energy Transferred

Question 19

force normal to a surface / area of that surface

Answer 19

Pressure

Question 20

force x distance (normal to direction of force)

Answer 20

Moment Of A Force

Question 21

0.5 x spring constant x extention2

Answer 21

Elastic Potential Energy