1. Motion Unit 6 Miss McDonald Science 8
Motion: Speed
Motion Unit 6
Miss McDonald
Science 8

2. A change in position of anything.
What is Motion?
A change in position of anything.
(person, object)

3. How do you know an object is moving?
It changes position.
Not in the same spot as before.
Relative Motion

4. How do we know how fast an object is moving?
If we know ________ the object has moved
and ________________ it took to move,
we can tell ___________ it moved.
how far
how much time
how fast

5. What is this measurement called?
The distance and time it takes an object to
move is called _______________.
speed

6. What is the formula for speed?
distance
time

7. What is the speed of George if he runs 10 meters in 5 seconds?
Practice Problem 1
What is the speed of George if he runs 10 meters in 5 seconds?
Speed = distance/time
= 10 m/ 5 sec
= 2 m/s

8. Practice Problem 2
Barbie drives her car for 1 hour at 30 miles per hour. How many miles did she go?
Speed = distance/time
30 mph = d/ 1 hour
d = 30 miles