1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Can someone help me out?

  1. Aug 31, 2006 #1
    Betty walks at average speed of 0.8 m/s from the Bay Farm bridge to the Hornet (aircraft carrier). The trip takes her 1.8 hours. How far did she walk in kilometers?

    I divided it but it never came out right can someone explain how to do it?
  2. jcsd
  3. Aug 31, 2006 #2


    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

    You divided? But it is multiplication that you must perform here. speed*times=distance. To remember it easily, look at the units: speed is m/s, time is s. So speed*time = (m/s)(s)=m (=distance). While distance/speed = m/(m/s)=s (=time)

    P.S. Don't forget to convert the hours into seconds before multiplying!
  4. Aug 31, 2006 #3


    User Avatar
    Science Advisor

    Speed = distance/time so distance= speed* time. Do you know how many seconds there are in an hour?
  5. Aug 31, 2006 #4
    Yeah 3600 seconds
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook