talyricsm49ox6aix talyricsm49ox6aix

15-09-2018
Physics

contestada

(HELP!! 10pts) a train travels 75km in 1hr, and then 68km in 2hrs. what is its average speed?

Respuesta :

Wilfredjr Wilfredjr

15-09-2018

Average speed = total distance travelled ÷ total time taken

AS = (75km + 68km) ÷ (1hr + 2hr)

As = 143km ÷ 3hr

AS = 47.66667 km/hr

AS = 47.7 km/hr (3sf)

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