Question 2.6.11: A mass of 2.0 kg moves to the right with a speed of 10.0 m s...

A mass of 2.0 kg moves to the right with a speed of 10.0 m s^{-1} and a mass of 4.0 kg moves to the left with a speed of 8.0 m s^{-1}. What is the total momentum of the system?

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P = (2 × 10 – 4 × 8) Ns

= -12 N s

The minus sign means that the direction of this total momentum is to the left.

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