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Maslowich
3 years ago
7

A train is accelerating at a rate of 2 m/s squared. if its initial speed of 20 m/s how long does it take the train to reach a sp

eed of 80 m/s
Chemistry
1 answer:
marusya05 [52]3 years ago
5 0

Answer:

30s

Explanation:

Set up the equation and solve for x:

2x+20=80

2x=60

x=30

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Answer:

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summing both equation gives

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since we sum both equations the ΔH of the overall reaction is also the sum of the ΔH of the individual reactions.

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