1/24/2012

Post date: Jan 24, 2012 2:54:0 PM

    • Bell ringer (verbal): How long would it take you to drive 60 miles if you average 60 mph in your car? How long to drive 120 miles? How long to drive 30 miles?

    • v = d / t examples

      • d = 50 meters, t = 100 seconds, v = ?

        • v = d / t = (50 m) / (100 s) = 0.5 m/s

      • v = 7 m/s, t = 15 seconds, d = ?

        • v = d / t

        • (t) v = d / t (t)

        • tv = d = (15s)(7m/s) = 105 m

      • v = 8 m/s, d = 24 m, t = ?

        • v = d / t

        • (t) v = d / t (t)

        • tv = d

        • tv / v = d / v

        • t = d / v = (24 m) / (8 m/s) = 3 sec

  • v = d / t worksheet