one student travels 40 miles per hour and the other travels 45 miles per hour. How long does it take the students to be 17 miles apart

Answer 1

Sorry, but this problem does not make any sense. Velocity - is a vector. It mean it has direction and magnitude. They could travel in one direction, or the can travel in opposite direction. Or it could be a situation when the angle between their directions of motion - arbitrary. Please, next time be more specific!