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gladu [14]
3 years ago
6

A train travels due south at 20 m/s. It reverses its direction and travels due north at 20 m/s. What is the change in velocity o

f the train? 50 m/s, due south e50 m/s, due north 120 m/s, due south zero ms 40 m/s, due north
Physics
1 answer:
luda_lava [24]3 years ago
5 0

Answer:

40 m/s due north

Explanation:

Consider that the south direction a negative Y axis and north direction as  + Y axis

v1 = 20 m/s South = 20 (-j) m/s

v2 = 20 m/s North = 20 j m/s

Change in velocity = v2 - v1 = 20 j - 20 (-j) = 40 j m/s

So, change in velocity is 40 m/s due north.

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A quantitative description of a system is important as it provides information about the carrying capacity of habitable worlds.

<h3>What is a quantitative description of the components of a system?</h3>

Quantitative description refers to the description of a system which is focused on the numerical value of the properties or components of the system.

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