1. Through a thunderstorm, 4.7s elapses between observing alighting flash and hearing the resulting thunder. About how far away in kilometres and miles was the lighting flash?
_____km
______mi
2. Picnickers see a lightning flash and hear the resulting thunder 7.9 s later. If the storm is traveling at a rate of 11km/h, how long, in minutes, do the picnickers have before the storm arrives at their location?
____min