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Course: Integral Calculus (2017 edition) > Unit 8

Lesson 1: Area & net change
Math
Integral Calculus (2017 edition)
Integration applications
Area & net change
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Net change challenge

Google Classroom

Problem

A FedEx delivery man is driving in a suburban neighborhood at 44 feet per second and suddenly sees a soccer ball roll into the roadway ahead. Fearing a child is close behind, the driver hits the brakes, but it takes him 0.8 seconds to react. The FedEx van comes to a stop 1.2 seconds later. The graph below shows the driver's velocity as a function of time.
What is the reaction distance?
  • Your answer should be
  • an integer, like 6
  • an exact decimal, like 0.75
  • a simplified proper fraction, like 3/5
  • a simplified improper fraction, like 7/4
  • a mixed number, like 1 3/4
feet
What is the braking distance?
  • Your answer should be
  • an integer, like 6
  • an exact decimal, like 0.75
  • a simplified proper fraction, like 3/5
  • a simplified improper fraction, like 7/4
  • a mixed number, like 1 3/4
feet
What is the total stopping distance?
  • Your answer should be
  • an integer, like 6
  • an exact decimal, like 0.75
  • a simplified proper fraction, like 3/5
  • a simplified improper fraction, like 7/4
  • a mixed number, like 1 3/4
feet