Problema Solution
a radio station signal has a radius of 100 miles. if you drive at a constant speed of 40 miles an hour, nonstop, directly across the diamter of the signal, how long can you listen
Answer provided by our tutors
let
t = the time that the signal can be heard
v = 40 mph the speed
d = the diameter or the signal
the diameter of the signal d = 2*radius
d = 2*100
d = 200 miles
since speed = distance/time => time = distance/speed
t = d/v
t = 200/40
t = 5 hours
the signal can be heard for 5 hours.