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Keith_Richards [23]
3 years ago
13

A train travels 99 kilometers in 2 hours, and then 90 kilometers in 3 hours. What is its average speed?

Physics
1 answer:
Agata [3.3K]3 years ago
3 0

Average speed =

(total distance)/(total time)

Average speed = (99+90)/(2+3)

That's (189 km) / (5 hr)

Average speed = 37.8 km/hr

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∑ Hey, Lethality ⊃

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Explanation:

<u><em>Given:</em></u>

<em>How many Sig Figs (Significant Figures) are in each number?</em>

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<u><em>Solution:</em></u>

<em>-------------------------------------------------------------------------------------------------------------</em>

<em>5070.0</em>

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<em>Number of significant figures: 5</em>

<em>-------------------------------------------------------------------------------------------------------------</em>

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<em>Number of significant figures: 9</em>

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<em>8/23/2022</em>

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5 0
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