Mathematics and Society - OS X Lion Server

fH;-7~J##A/Hrp£fg-:Z5V£.§M-Z-E.7 (CO"lTi~u£.\"))3) The distance between the earth and Alpha Centauri, the nearest star outside ofour solar system, is 4.3 light years.A light year is the distance light can travel in one year.Using the approximation of 300,000 km/s for the speed of light find how farlight would travel during the following time intervals.1 minute km1 hour ____________ km1 day km1 year km4) How long would it take for light totravel the following distances.SAIJ•FRAIIlCIS 0A) From Mexico to Canada?B) From New York to San Francisco?____ ssC) Around the world? (40,200 kilometres)sD) From the earth to the moon? (386,000 km)E) From the earth to the sun? (150,000,000 km)ssEstimating the distance from a lightning strike.Sound travels much slower than light. In fact, it takes about 3 seconds forsound to travel one kilometre. Knowing this a person may calculate how far he isaway from a lightning strike.Follow these directions.A) Count the number of seconds between Seeingthe lightning and hearing the thunder.B) Divide the number of seconds by three.This will approximate how many kilometresare between you and the lightning.5) Complete this table of values.Seconds between lightningflash and thunder sound3 6 1 5 9 10Distance inkilometres355