equations

Question 1

v = d/t (Speed)

Answer 1

v = m/s

d = meters (m)

t = seconds (s)

Question 2

a = Δv/t (Acceleration)

Answer 2

a = m/s²

Δv = m/s

t = s

Question 3

F = ma (Force)

Answer 3

F = N (kg·m/s²)

m = kg

a = m/s²

Question 4

p = mv (Momentum)

Answer 4

p = kg·m/s

m = kg

v = m/s

Question 5

W = Fd (Work Done)

Answer 5

W = J (N·m)

F = N

d = m

Question 6

KE = 1/2 mv² (Kinetic Energy)

Answer 6

KE = J

m = kg

v = m/s

Question 7

GPE = mgh (Gravitational Potential Energy)

Answer 7

GPE = J

m = kg

g = N/kg

h = m

Question 8

P = W/t (Power)

Answer 8

P = W (J/s)

W = J

t = s

Question 9

v = fλ (Wave Speed)

Answer 9

v = m/s

f = Hz

λ = m

Question 10

Q = It (Charge)

Answer 10

Q = C (A·s)

I = A

t = s

Question 11

E = VIt (Electrical Energy)

Answer 11

E = J

V = V

I = A

t = s

Question 12

R = V/I (Resistance)

Answer 12

R = Ω (V/A)

V = V

I = A

Question 13

P = VI (Electrical Power)

Answer 13

P = W (V·A)

V = V

I = A

Question 14

ρ = m/V (Density)

Answer 14

ρ = kg/m³

m = kg

V = m³

Question 15

E = mcΔT (Specific Heat Capacity)

Answer 15

E = J

m = kg

c = J/kg°C

ΔT = °C or K

Question 16

P = F/A (Pressure)

Answer 16

P = Pa (N/m²)

F = N

A = m²

Question 17

Distance conversions

Answer 17

1 km = 1000 m

1 cm = 0.01 m

1 mm = 0.001 m

Question 18

Time conversions

Answer 18

1 hour = 3600 s

1 minute = 60 s

Question 19

Mass conversions

Answer 19

1 tonne = 1000 kg

1 g = 0.001 kg

Question 20

Energy/Power conversions

Answer 20

1 kW = 1000 W

1 kWh = 3.6 × 10⁶ J

Question 21

Temperature conversions

Answer 21

Kelvin (K) = °C + 273