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It is generally a good idea to gain an understanding of the size of units. Consider each object and calculate the magnitude of
their momentum in SI units.
A ladybug with mass 28.50 milligrams flies by your head at 3.75 km/h.
magnitude of the momentum:
kg-m/s
A 37.90 km boy walks at 4.05 km/h.
magnitude of the momentum:
kg-m/s
A car with mass 841 kg is moving at a speed of 41.3 km/h.
magnitude of the momentum:
kg-m/s

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