PHYSICS: Fundamental and Derived Quantities
- 1. PHYSICS FUNDAMENTAL & DERIVED QUANTITIES BY: SALAHDEEN HI TUTOR,EDUCATION AND E-LEARNING CONSULTANT
- 2. FUNDAMENTAL QUANTITIES Fundamental quantities are the basic quantities that are independent of others. They are length (m), mass (kg) and Time (s), electric current (A), temperature (k), amount of substance (moles) and luminous intensity (candela).
- 3. DERIVED QUANTITIES Derived quantities are those obtained by simple combination of basic quantities e.g. Area, Volume, Density, Velocity, Acceleration, Force, energy, work, power, momentum, pressure, electric charge, electric potential etc.
- 4. S/N QUANTITY DERIVATION DIMENSION UNIT 1. Area length x breadth L 2 m 2 2. Volume length x breadth x heights L 3 m 3 3. Density mass 歎 volume ML -3 Kg/m 3 4. Speed or velocity distance 歎 time LT -1 m/s 5. Acceleration change in velocity歎 time LT -2 m/s 2 6. Force Mass x acceleration M LT -2 N 7. Weight Mass x acceleration due to gravity MLT -2 N 8. Momentum mass x velocity M LT -1 kgm/s 9. Impulse force x time M LT -1 NS 10. Pressure Force 歎 Area M L -1 T -2 Pa or NM 2 11. Energy or work force x distance M L 2 T -2 J or Nm 12. Power Work 歎 time M L 2 T -1 W or Nm/s
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