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OpenStudy (anonymous):
A cart moving to the right with a momentum of magnitude 5.34 ± 0.04 kg*m/s collides with a second cart moving to the left with a momentum of magnitude 8.40 ± 0.01 kg*m/s. What is the uncertainty in the momentum?
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OpenStudy (anonymous):
Sum Momentum is always preserved so it is basically (5.34 ± 0.04) - (8.40 ± 0.01). The sum of uncertainties is ± 0.05.
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