formula.expert
lbf⋅s\text{lbf}{\cdot}\text{s}

pound-force second

Momentumexact by definition

The pound-force second is the impulse delivered by one pound-force acting for one second, exactly 4.4482216152605 N·s. The value is exact because the pound-force is exactly defined. Numerically it equals the momentum of one slug moving at one foot per second.

Watch out: Do not confuse it with the pound foot per second, which uses the mass pound and is 32.174 times smaller. Small solid rocket motors and airbag inflators are commonly specified in lbf·s of total impulse.

1 lbf⋅s\text{lbf}{\cdot}\text{s} 4.4482216 kg⋅m/s\text{kg}{\cdot}\text{m/s}

One pound-force second in every momentum unit

8.32332e+21megaelectron volt per c (MeV/c)
8.32332e+18gigaelectron volt per c (GeV/c)
444,822gram centimeter per second (g·cm/s)
444,822dyne second (dyn·s)
4,448.22millinewton second (mN·s)
32.174pound foot per second (lb·ft/s)
4.44822kilogram meter per second (kg·m/s)
4.44822newton second (N·s)
1pound-force second (lbf·s)this unit
1slug foot per second (slug·ft/s)
0.00444822kilonewton second (kN·s)
0.00444822tonne meter per second (t·m/s)
Solvers that use momentum

← Every unit on formula.expert