On Friday in our Math class we been learning about the formula of the speed of sound and the speed of light. The speed of light is about 300,000,000 miles per second and the speed of sound is about 340.29 miles per second. So our teacher gave students a homework about finding the favorite city and the distance between the city to Phnom Penh. Then calculate the speed how much time it take to the favorite city start from Phnom Penh using the speed of sound and the speed of light. I finally choose to go to Chicago.
Now look at this:
Distance from Phnom Penh to Chicago is 13929 km. In the speed of sound we take about 11.37 hours and the speed of light we take about 0.04643 second.
