Problema Solution
Using a Vascar computer, a trooper recorded 1000 feet as the
distance between two reference points. He also used Vascar to time the travel of a
target vehicle between the two reference points. If the vehicle took 18 seconds to
travel from one reference point to the other, and if the posted speed limit was 60
mph, was the person speeding?
Distance รท time = suspect speeed
Answer provided by our tutors
1 mi = 5280 ft
t ft = 1/5280 mi
Distance = 1000 ft = 1000(1/5280) mi
time = 18 seconds = 18/(60*60) = 18/3600 hr
suspect speed = Distance : time
suspect speed = (1000(1/5280)) : (18/3600)
suspect speed = 37.88 mph
click here to see the step by step calculation
37.88 mph < 60 mph
The person was not speeding.