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6 September, 20:12

Spaceship 1 and spaceship 2 have equal masses of 300 kg. spaceship 1 has a speed of 0 m/s, and spaceship 2 has a speed of 4 m/s. what is the magnitude of their combined momentum?

A. 600 kg-m/s

B. 1,200 kg-m/s

C. 2,400 kg-m/s

D. 2,000 kg-m/s

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  1. 6 September, 20:49
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    B. 1,200 kg-m/s Momentum is defined as the product of mass and velocity. So let's see what the momentum is for each spaceship. Spaceship 1 has a mass of 300 kg and a velocity of 0 m/s, giving 300 kg x 0 m/s = 0 kg-m/s Spaceship 2 has a mass of 300 kg and a velocity of 4 m/s, giving 300 kg x 4 m/s = 1200 kg-m/s Since we're looking for their combined value, add the 2 figures together. 0 kg-m/s + 1200 kg-m/s = 1200 kg-m/s So the answer is option B. 1,200 kg-m/s
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