Problema Solution
An air traffic controller observes a plane heading from New York to San Francisco traveling at 450 mph. At the same time, another plane leaves San Francisco and travels 500 mph to New York. If the distance between the airports is 2850 miles, how long will it take for the planes to pass each other?
Answer provided by our tutors
N to S--> 450mph.
S to N--> 500mph.
so, relative speed= 450+500= 950mph.
distance= 2850 miles
so, time= 2850/950 = 3 hours.