Two friends decided to have a friendly race on their bikes. The girl travels at 6.0 m/s while her boyfriend speeds off at a rate of 6.5m/s. If both friends decide to go in different directions from the same starting point, the distance separating the friends after 20 seconds is written as a.b*10^c. What are the values of a, b and c respectively?

Expert Answers

An illustration of the letter 'A' in a speech bubbles

distance is a function of the rate at which you go and how long you travel at that rate. The formula for distance is:  d = vt where d is the distance, v is the rate, and t is the time.

In this case, the girl is going a distance of 6 m/s * 20 s = 120 m.

The boy is going a distance of 6.5 m/s * 20 s = 130 s.

Since they are going in different directions, the total distance is 120 m + 130 m = 250 m

in scientific notation 250 = 2.5 * 10^2

 

Approved by eNotes Editorial Team

Posted on

Soaring plane image

We’ll help your grades soar

Start your 48-hour free trial and unlock all the summaries, Q&A, and analyses you need to get better grades now.

  • 30,000+ book summaries
  • 20% study tools discount
  • Ad-free content
  • PDF downloads
  • 300,000+ answers
  • 5-star customer support
Start your 48-Hour Free Trial