Which two units are identical when expressed in terms of SI base units?
A J C–1 and kgm2 A–1s–2
B J s and kg m2s–1
C N m and kgm3s–2
D Ns and kgm s–3
ANSWER: B
The Physics Behind
- The following are some SI derived units and where they are based from.
- 1 J = 1 Nm
- 1 N = 1 kg m s–2
- Using the above,
1 J s = 1 Nm s
1 J s = 1 kg m s–2 m s
1 J s = 1 kg m2s–1
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