The speed of light is about $2 \times 10^{5}$ miles per second. On an average, it takes light about $500$ seconds to travel from the sun to Earth. What is the average distance from Earth to the sun? Write your answer in scientific notation.

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Solution

Speed of light $= 2 \times 10^{5}$ miles per second.
Taken taken to travel from sun to earth $= 500$ sec
Thus, Average distance $=$ Speed $\times$ Time taken.
$= 2 \times 10^{5} \times 500$ miles
$= 1000 \times 10^{5}$ miles
$= 10^{3} \times 10^{5}$ miles
$= 10^{8}$ miles

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The speed of light is about 2×105 miles per second. On an average, it takes light about 500 seconds to travel from the sun to Earth. What is the average distance from Earth to the sun? Write your answer in scientific notation.

Speed of light =2×105 miles per second.Taken taken to travel from sun to earth =500 secThus, Average distance = Speed × Time taken. =2×105×500 miles =1000×105 miles =103×105 miles =108 miles

The speed of light is about $2 \times 10^{5}$ miles per second. On an average, it takes light about $500$ seconds to travel from the sun to Earth. What is the average distance from Earth to the sun? Write your answer in scientific notation.

Speed of light $= 2 \times 10^{5}$ miles per second.
Taken taken to travel from sun to earth $= 500$ sec
Thus, Average distance $=$ Speed $\times$ Time taken.
$= 2 \times 10^{5} \times 500$ miles
$= 1000 \times 10^{5}$ miles
$= 10^{3} \times 10^{5}$ miles
$= 10^{8}$ miles