besaran pokok adalah besaran yang telah ditetapkan dan menjadi dasar untuk menetapkan besaran yang lain

• panjang = meter = [L]

• massa = kg = [M]

• waktu = sekon = [T]

• suhu = kelvin = [q]

• arus listrik = ampere = [I]

• intensitas cahaya = candela = [J]

• jumlah zat = mol = [N]

besaran turunan adalah besaran yang diturunkan dari besaran pokok.

jawab :

1. percepatan

a = v/t

a = (s/t) / t

a = s/t²

a = m/s²

a = [L] [T]⁻²

2. gaya

f = m . a

f = kg . m/s²

f = [M] [L] [T]⁻²

3. tekanan

p = f/a

p = (m . a) / a

p = (kg . m/s²) / m²

p = [M] [L] [T]⁻² [L]⁻²

p = [M] [L]⁻¹ [T]⁻²

4. energi potensial

ep = m . g . h

ep = kg . m/s² . m

ep = [M] [L] [T]⁻² [L]

ep = [M] [L]² [T]⁻²

5. energi kinetik

ek = 1/2 . m . v²

ek = 1/2 . kg . (m/s)²

ek = 1/2 . kg . m²/s²

ek = [M] [L]² [T]⁻²

6. momentum

p = m . v

p = kg . m/s

p = [M] [L] [T]⁻¹

7. daya

p = w/t

p = (f . s) / t

p = (m . a . s) / t

p = (kg . m/s² . m) / s

p = kg . m²/s³

p = [M] [L]² [T]⁻³

8. massa jenis

ρ = m/v

p = kg/m³

p = [M] [L]⁻³

9. usaha

w = f . s

w = m . a . s

w = kg . m/s² . m

w = kg . m²/s²

w = [M] [L]² [T]⁻²

10. frekuensi

f = 1/T

f = 1/s

f = [T]⁻¹