Correct Answer - Option 1 : Momentum
Concept:
Dyne and Cgs unit
Dyne is the Cgs unit of Force.
Cgs is the way of expressing the units in C - Centimeter, g - gram, s - second.
Second Law of Motion:
The rate of change of momentum is directly proportional to the applied force.
\(F = \frac{Δ P}{t}\)
⇒ Δ P = F.t
Momentum is the product of mass and velocity.
Explanation:
So, we have
Δ P = F.t
Or
Momentum = Force × time
So, the unit of momentum is the unit of force multiplied by the unit of time.
Cgs unit of momentum = Cgs unit of force × cgs unit of time = dyne × second
So, dyne × second is the cgs unit of momentum.
- SI unit of momentum or impulse is Newton - meter or Kg m /s.
- erg is the Cgs unit of energy.
