Average Velocity
physics 10
Lesson 4
Objective: You will be able to:
• identify and differentiate scalar
and vector values.
• calculate average speed and
velocity.
What is the difference between speed
and velocity?
Scalar:
Vector:
What is the difference between
distance and displacement?
Distance:
Displacement:
This is a picture of the
Altenberg bobsleigh track.
Describe and show the
distance and displacement.
The distance from start to
finish for the two-man race
is 1413 m. The track
record is 54.64 s.
Calculate the average
speed.
Calculate average velocity
if the displacement is
600m.
What is the difference between average
and instantaneous speed?
Average:
Formula:
Instantaneous:
Tortoise or Hare. Which one was faster?
Ex. You travel at 12.0 m/s for 180 s. What
distance did you travel?
How could we turn this into a displacement
question?
Ex. A bicycle is ridden at an average
velocity of 7.00 m/s, W covering 1.5
km, W. How long did it take the cyclist
to do this?
Ex. Suppose a hare was hopping along at
0.70 m/s for 15s. A dog spots the hare
and gives chase. The hare now runs along
at 4.0 m/s for the next 20s, when the
dog gives up and the hare stops. What
was the hare's average speed during this
time?
Assignment
Read p. 124-128
Do average velocity worksheet.