Find the momentum of a heavy automotive weighing 5850 lb traveling 70 ft/s

Momentum = velocity * mass

= 5850 lb * 70 ft/s

= 409500 lb*ft/s

these are rather odd units - converting everything to STI units first would make for a much nicer result:

70ft/s = 21.3 m/s

5850 lb = 2653.5 kg

therefore:

momentum in kg*m/s=

21.3 m/s * 2653.5 kg = 56520 kg*m/s