Paper 2 Equations

Question 1

Wave speed
Frequency
Wave length

Answer 1

Wave speed(m/s) = frequency(Hz) x wavelength(m)
V=fA

Question 2

Distance travelled
Speed
Time taken

Answer 2

Distance(m) = Speed(m/s) x Time(s)
D=ST
D/ST

Question 3

Acceleration
Change in velocity
Time taken

Answer 3

Acceleration(m/s^2) = change in velocity(m/s)/time(s)
a=v-u/t
v-u/at

Question 4

Force
Mass
Acceleration

Answer 4

Force(N) = mass(kg) x acceleration(m/s^2)
F=ma
F/ma

Question 5

Weight
Mass
Gravitational field strength

Answer 5

Weight(N) = mass(kg) x gravitational field strength(N/kg)
W=mg
W/mg

Question 6

Work done
Force
Distance moved

Answer 6

Work done(J) = Force(N) x distance moved(m)
W=FD
W/FD

Question 7

Force
Spring constant
Extension

Answer 7

Force(N) = spring constant(N/m) x extension(m)

F=ke

Question 8

Distance
Force
Moment

Answer 8

Moment (Nm) = Force (N) x distance (m)

M=Fd

Question 9

Elastic potential energy equation

Answer 9

Ee (J) = 1/2 x spring constant (N/m) x extension^2(m)

Ee=1/2ke^2

Question 10

Force
Area
Pressure

Answer 10

Force (N) = pressure (Pa) x area

F=pA

Question 11

Change in momentum
Change in time
Force

Answer 11

Force = change in momentum (kgm/s)/Change in time

Question 12

What are the units for momentum

Answer 12

kgm/s

Question 13

What are the units for spring constant

Answer 13

N/m

Question 14

What are the units for moments

Answer 14

Nm

Question 15

What are the units for gravitational field strength

Answer 15

N/kg

Question 16

Equation for frequency

Answer 16

Frequency = 1/time

Question 17

Magnification=

Answer 17

Image height/ object height

Question 18

Length
Current
Magnetic flux density
Force

Answer 18

Force = magnetic flux density (Tesla) x Current x length

F=BIL