Physics Equations

Question 1

Momentum

Answer 1

momentum = mass x velocity

p=mv

Question 2

Average Speed

Answer 2

Average speed = total distance / total time

Question 3

Acceleration

Answer 3

Acceleration = change of velocity / time taken

Question 4

Force

Answer 4

Force = mass x acceleration
F = ma

Question 5

Impulse

Answer 5

Impulse = mass x (final veloctiy - initial velocity)

Question 6

Kinetic Energy

Answer 6

Kinetic Energy = 1/2 x mass x final velocity ^2 (squared)

Question 7

Potential Energy

Answer 7

Potential Energy = mass x gravity x change in height

Question 8

Efficiency (energy)

Answer 8

Efficiency = useful energy output / energy input

x 100

Question 9

Efficiency (power)

Answer 9

Efficiency = useful power output / power input

x 100

Question 10

Work

Answer 10

Work = Force x distance = Change in Energy

Question 11

Power

Answer 11

Power = Change in Energy / time

Question 12

Pressure

Answer 12

Pressure = Force / Area

Question 13

Thermal Capacity

Answer 13

Thermal Capacity = mass x capacity

Question 14

Energy

Answer 14

Energy = mass x light x change in Temperature

Question 15

Energy {v2}

Answer 15

Energy = mass x specific latent heat

Question 16

Wave Velocity

Answer 16

Wave Velocity = Wave Frequency x Wave Length

Question 17

Critical Angle {v2}

Answer 17

Critical Angle = sin i (Angle of Incidence) / sin r (Angle of Reflection)

Question 18

Critical Angle

Answer 18

Critical Angle = 1 / sin c (Critical Angle)

Question 19

Current

Answer 19

Current = Coulomb of charge / time

Question 20

Resistance

Answer 20

Resistance = Volt / Current

Question 21

Power {v2}

Answer 21

Power = Current / Volt

Question 22

Electricity

Answer 22

Electricity = Current x Volt x time

Question 23

Transformers (/)

Answer 23

Primary Voltage / Secondary Voltage = Primary Number of turns / Secondary Number of turns

Question 24

Transformers (x)

Answer 24

Primary Current x Primary Voltage = Secondary Current x Secondary Voltage