physics equaitions AQA GCSE

Question 1

*unit 1

what is kinetic energy clue= kinetic energy= 1/2massspeed

Answer 1

EK = 1/2mv^2

Question 2

*unit 1

GPE = mass × gravitational field strength × height

Answer 2

E^p=mgh

Question 3

*unit 1

power = work done /time taken = energy transferred/time taken

Answer 3

𝑃=𝑊/𝑡=𝐸/𝑡

Question 4

• unit 1
  effciency=useful energy output /total energy input
  efciency=useful power output

Answer 4

• there is no short version of this one

Question 5

equations given in the exam

“elastic potential energy = 0.5 × spring constant x “ “ (extension)”^”2”

Answer 5

E_e=1/2 ke^2

Question 6

“change in thermal energy = mass ×”

“ specific heat capacity × temperature change”

Answer 6

ΔE=mcΔθ

Question 7

*unit 2

charge flow=current*time

Answer 7

Q= I t

Question 8

potential difference = current × resistance

Answer 8

V=I R

Question 9

total resistance = resistance of component 1 +

resistance of component 2

Answer 9

R_T =R_1+R_2

Question 10

power = current × potential difference

Answer 10

P=I V

Question 11

“power = “ 〖”(current)” 〗^”2” “ × resistance”

Answer 11

P= I^2 R

Question 12

“energy transferred = power × time”

Answer 12

E=Pt

Question 13

“energy transferred = charge flow × potential difference”

Answer 13

E=QV

Question 14

unit 3
to learn
“density = “ “mass” /”volume”

Answer 14

ρ= m/V

Question 15

eqautions given in the exam

“change in thermal energy = mass × specific heat capacity × temperature change”

Answer 15

change in thermal engery ΔE=mcΔθ

Question 16

“thermal energy for a change in state = “

“ mass × specific latent heat”

Answer 16

E=mL

Question 17

unit 5 equations

“weight = mass × gravitational field strength”

Answer 17

W=m g

Question 18

“work done = force × distance”

(moved along the line of action of the force)”

Answer 18

W=Fs

Question 19

force = spring constant * extension

Answer 19

F=ke

Question 20

moment of a force = force * distance

(perpendicular to the direction of the force)

Answer 20

M=Fd

Question 21

“pressure = “ “force normal to a surface” /”area of that surface”
distance travelled = speed * time
“acceleration = “ “change in velocity” /”time taken”

               =  "final velocity-initial velocity" /"time taken"  resultant force = mass * acceleration * momentum = mass * velocity

Answer 21

p=  F/A
s=vt
a=  Δv/t
=  (v-u)/t
F=ma
p=mv

Question 22

unit 6

wave speed = frequency * wavelength

Answer 22

v=f λ

Question 23

“time period = “ “1” /”frequency”

Answer 23

T= 1/f