A train travels 98 kilometers in 1 hours, and then 78 kilometers in 3 hours. what is its average speed? this is a fill in the blank question. thanks!

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asked May 6, 2019 225k views

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A train travels 98 kilometers in 1 hours, and then 78 kilometers in 3 hours. what is its average speed?

this is a fill in the blank question. thanks!

Physics
middle-school

Zadrozny asked

by Zadrozny

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The average speed over the total four hour interval is

$\frac{98\,\mathrm{km}+78\,\mathrm{km}}{4\,\mathrm h}=31\,\frac{\mathrm{km}}{\mathrm h}$

TuanGeek answered May 10, 2019

by TuanGeek

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