Paper 2

Question 1

Weight, mass, gravity

Answer 1

Weight = mass x gravity
W = m x g
(N) (kg) (N/kg)

Question 2

Force, spring constant, extension

Answer 2

Force = spring constant x extension
F = k x e
(J) (N/m) (m)

Question 3

Work, force, distance

Answer 3

Work = force x distance
W = f x s
(J) (N) (m)

Question 4

Kinetic energy, mass, velocity

Answer 4

Kinetic energy = 1/2 mass x velocity^2
Ek = 1/2 x m x v^2
(J) (kg) (m/s)

Question 5

Pressure, force, area

Answer 5

Pressure = force/area
P = F/A
(Pa) (N) (m^2)

Question 6

Distance, speed, time

Answer 6

Distance = speed or velocity x time
S = V x t
(m) (m/s) (s)

Question 7

Acceleration,change in velocity, time

Answer 7

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

Question 8

Final velocity, initial velocity, acceleration, distance

Answer 8

Final velocity - initial velocity = 2 x acceleration x distance
V^2 - u^2 = 2 x a x s
(m/s) (m/s^2) (m)

Question 9

Momentum, mass, velocity

Answer 9

Momentum = mass x velocity
P = m x v
(kg m/s) (kg) (m/s)

Question 10

Time period, frequency

Answer 10

Time period = 1/ frequency
T = 1/f
(s) (Hz)

Question 11

Wave speed, frequency, wave length

Answer 11

Wave speed = frequency x wave length
V = f x lambda
(m/s) (Hz) (m)

Question 12

Moment, force, distance

Answer 12

Moment = force x distance
M = f x d
(Nm) (N) (m)

Question 13

Speed, distance, time

Answer 13

Speed = distance/time

m/s) (m) (s

Question 14

Magnification, image height, object height

Answer 14

Magnification = image height/object height

Question 15

voltage in primary coil, voltage in secondary coil, number of turns in the primary coil, number of coils in the secondary coil

Answer 15

Voltage of primary coil/ voltage or secondary coil = number of turns in the primary coil/ number of turns in the secondary coil
Vp/Vs = Np/Ns
(v)

Question 16

Force, mass, acceleration

Answer 16

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

Question 17

Force, magnetic flux density, current, length

Answer 17

Force = Magnetic flux density x current x length
F = B I l
(N) (T) (A) (m)

Question 18

Force, mass, change in velocity, change in time

Answer 18

Force = (mass x change in velocity)/ change in time
F = (m x change in v)/ change in t
(N) (kg) (m/s) (s)

Question 19

Pressure, height, density, gravitational field strength

Answer 19

Pressure = height x density x gravitational field strength
P = h x p x g
(Pa) (m) (kg/m^3) (9.8 N/kg)

Question 20

Voltage in secondary coil, current in secondary coil, voltage in primary coil, current in primary coil

Answer 20

Voltage in secondary coil x current in secondary oil = voltage in primary coil x current in primary coil
Vs x Is = Vp x Ip
(V) (A) (V) (A)