Equations

Question 1

Kinetic Energy =
Ke=

⚡️⚡️⚡️⚡️⚡️

Answer 1

1/2 x mass x speed^2
1/2mv^2

M in kg
V in m/s
Ke = J

Question 2

Gravitational Potential Energy =
GPE =

🌏🌏🌏🌏🌏🌏

Answer 2

Mass x gravitational field strength x height
Mgh

GPE in J GFS in: Earth - 9.8 N/Kg
Mass in Kg GFS in: Moon - 1.6N/Kg
Height = m

Question 3

Specific Heat Capacity
C

🔥🔥🔥🔥🔥🔥

Answer 3

Energy = mass x specific heat capacity x change in temp
E = m x C x (triangle)0

E in J
C in J/kg celcius
Change in temp in celcius

Question 4

Power =
P =

(2 different equations) - energy
🌩🌩🌩🌩🌩🌩🌩

Answer 4

Work done/time taken Or Energy transfered/time taken
WD/T or E/T

WD in J T in s
E in J P in W

Question 5

Efficiency =

🌺🌺🌺🌺🌺🌺

Answer 5

Useful energy output/total energy input

Useful power output/total power input

Question 6

Charge flow =
Q =

💡💡💡💡💡💡

Answer 6

Current x time
I x T

Charge flow in C
Current in A
Time in S

Question 7

Potential difference =
V =

🛍🛍🛍🛍🛍🛍🛍

Answer 7

Current x resistance
I x R

V in V (voltage)
I in A
R in Ω

Question 8

Total resistance =

⚖️⚖️⚖️⚖️⚖️⚖️⚖️⚖️

Answer 8

Resistance of component 1 + resistance of component 2

R in Ω

Question 9

Power =
P =

(2 equations) - electricity
☔️☔️☔️☔️☔️☔️☔️

Answer 9

Current x potential difference Or (Current)^2 x resistance
I x V or I^2 x R

P in W
I in A
V in V (voltage)
R in Ω

Question 10

Energy transfered =
E =

(2 equations)
🔋🔋🔋🔋🔋🔋

Answer 10

Power x time Or Charge flow x potential difference
P x T or Q x V

E in J
P in W
T in S
Q in C
V in V (voltage)

Question 11

Weight =
W =

🪆🪆🪆🪆🪆🪆🪆

Answer 11

Mass x gravitational field strength
M x g

W in N
M in kg
GFS in 9.8N/kg (Earth)
in 1.6Nkg (Moon)

Question 12

Work Done =
WD =

🪅🪅🪅🪅🪅🪅🪅🪅

Answer 12

Force x distance
F x s

WD in J
F in N
D in m

Question 13

Force =
F =

🧩🧩🧩🧩🧩🧩🧩

Answer 13

Spring constant x extension
K x e

F in N
K in N/m
E in m

Question 14

Distance travelled =
S =

🍄🍄🍄🍄🍄🍄🍄

Answer 14

Speed x time
V x T

S in m
V in m/s or mph
T in s

Question 15

Acceleration =
A =

🏎🏎🏎🏎🏎🏎🏎

Answer 15

Change in velocity/time taken
(Final velocity - original to find change)
V - U/T

A in m/s^2
V in m/s
T in s

Question 16

Resultant force =
F =

🦭🦭🦭🦭🦭🦭🦭

Answer 16

Mass x acceleration
M x A

Resultant forces is the difference between 2 forces

F in N
M in kg
A in m/s^2

Question 17

Momentum =
P =

🍁🍁🍁🍁🍁🍁

Answer 17

Mass x velocity
M x V

P in kg m/s
M in kg
V in m/s

Question 18

Wave speed =
V =

🌻🌻🌻🌻🌻🌻🌻🌻

Answer 18

Frequency x wavelength
F x λ

V in m/s
F in Hz
λ in m