LittleRedPanda LittleRedPanda

21-08-2018
Physics

contestada

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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LammettHash LammettHash

21-08-2018

The average speed over the total four hour interval is

[tex]\dfrac{98\,\mathrm{km}+78\,\mathrm{km}}{4\,\mathrm h}=31\,\dfrac{\mathrm{km}}{\mathrm h}[/tex]

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