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gizmo_the_mogwai [7]
4 years ago
9

Robert was able to travel 166.0 miles in 4.000 hours and used 39 liters of gasoline. What was Robert's speed in feet per second?

Chemistry
1 answer:
Alborosie4 years ago
4 0

Answer:

60.87 ft/s

Explanation:

Speed is defined as a ratio between the distance traveled and time. Given a total distance of:

d = 166.0~mi

Let's convert it into feet first of all using the conversion factor:

1~mi = 5280~ft

We obtain:

d = 166.0~mi\cdot \frac{5280~ft}{1~mi} = 876480~ft

Now let's convert the given time into seconds knowing that:

1~h = 3600~s

Then:

t = 4.000~h\cdot \frac{3600~s}{1~h} = 14400~s

Now let's find the speed:

v = \frac{d}{t} = \frac{876480~ft}{14400~s} = 60.87~ft/s

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