The newton-second (also newton second; symbol: N⋅s or N s) is the unit of impulse in the International System of Units (SI). 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.
F → ⋅ t = Δ m v → {\displaystyle {\vec {F}}\cdot t=\Delta m{\vec {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 , {\displaystyle \mathbf {p} =m\mathbf {v} ,}
p {\displaystyle \mathbf {p} } is the momentum in newton-seconds (N⋅s) or "kilogram-metres per second" (kg⋅m/s)
m {\displaystyle m} is the mass in kilograms (kg)
v {\displaystyle \mathbf {v} } is the velocity in metres per second (m/s)
Examples This table gives the magnitudes of some momenta for various masses and speeds.
See also Power factor Newton-metre – SI unit of torque Orders of magnitude (momentum) – examples of momenta
References