Girish Mahajan (Editor)

Newton second

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Unit system
  
SI derived unit

Symbol
  
Ns

In SI base units:
  
kg ⋅ m/s

Unit of
  
Impulse and momentum

Named after
  
Isaac Newton

Newton second

The newton second (also newton-second, symbol Ns or N·s) is the derived SI unit of impulse. It is dimensionally equivalent to the momentum unit kilogram metre per second (kg·m/s). One newton second corresponds to a one-newton force applied for one second.

Contents

F → ⋅ t = Δ m v →

It can be used to identify the resultant velocity of a mass if a force accelerates the mass for a specific time interval.

Definition

Momentum is given by the formula:

p = m v ,
  • p is the momentum in newton second (Ns) or "kilogram meters per second" (kg·m/s)
  • m is the mass in kilogram
  • v is the velocity in meters per second (m/s)
    • N s = N ⋅ s = k g ⋅ m / s

    Examples

    Below, the magnitudes of some momenta are given for various masses and speeds (magnitudes of velocity).

    References

    Newton second Wikipedia
    (Text) CC BY-SA