It took 40 seconds for a train to completely pass a 2km tunnel. Find the velocity of the train. (The length of the train is 800m.)
What I have tried:
V=2800/40seconds V= 700m/seconds
2026-03-28 22:06:25.1774735585
Problem solving and equations velocity distance time
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I assume you're looking to check your solution.
As you said, the velocity is equal to $$\frac{2800 \text{m}}{40 \text{s}}$$ but you have an extra zero. The answer should be:
$$\frac{2800 \text{m}}{40 \text{s}} = \frac{280 \text{m}}{4 \text{s}} = 7\color{red}{0} \text{m}/\text{s}$$
$700 \text{m}/\text{s}$ is the same magnitude as $700 \text{km}/\text{h}$ which is extremely fast for a train. Therefore your original answer must have ben off.