Distance Problem 4 - Uniform Motion rt=d

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Taught by YourMathGal
  • Currently 4.0/5 Stars.
2244 views | 1 rating
Part of video series
Meets NCTM Standards:
Lesson Description:

Solves this word problem using rt=d formula: Andy and Beth are at opposite ends of a 18-mile country road with plans to leave at the same time running toward each other to meet. Andy runs 7 mph while Beth runs 5 mph. How long after they begin will they meet?
Answer: 1.5 hours

More free YouTube videos by Julie Harland are organized at http://yourmathgal.com

Questions answered by this video:
  • How do you solve uniform motion problems?
  • How do you solve equations using the formula rate * time = distance?
  • How can you draw and use pictures to solve word problems using the formula d = rt?
  • How can you come up with an equation to solve a uniform motion problem?
  • How can you use a chart to solve a uniform motion problem?
  • How can you check your solutions to a uniform motion problem?
  • If two people are at opposite ends of an 18-mile road, they leave at the same time running toward each other, and one person runs 7 mph and the other runs 5 mph, how long after they begin will they meet?
  • If you know the rates that two people are running, how do you write an expression for the time and distance they ran?
  • Staff Review

    • Currently 4.0/5 Stars.
    This uniform motion problem is solved the same way as the rest -- making a sketch of the situation, creating a chart that leads to solving an equation. This problem goes much more quickly and easily than the rest of the problems, however.