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  • 05-05-2019
  • Chemistry
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A train approaching a crossing changes speed from 10 m/s to 25 m/s in 240 s. How can the train's acceleration be described?

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  • 05-05-2019

Answer:

[tex]\boxed{\text{The train is speeding up by 0.0625 m/s every second}}[/tex]

Explanation:

Acceleration (a) is the change in velocity (Δv) divided by the change in time (Δt).

[tex]a = \frac{\Delta v}{\Delta t} = \frac{v_{2} - v_{1} }{t_{2} - t_{1}} \\\\a = \frac{25 - 10}{240 - 0}=\frac{15 }{240}=\text{0.0625 m/s}^{2}\\\\\ \boxed{\textbf{The train is speeding up by 0.0625 m/s every second}}\\[/tex]

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