Speed, Distance, Time Calculations
You Need:
Colored Pencils
Science Folder
Science Notebook
Everything else goes into the back.
Start a new page in your notebook. Title it “Speed”
What is speed? How do you think scientists define it? If
you were to put speed into an equation what would it
look like?
Speed = ____________
 Speed is how fast something is going or the distance
something moves in a given amount of time.
 Speed = distance
---------time
 Speed is measured in miles per hour
 Speed is also measured in kilometers per hour
Measurement
Unit
Speed
Miles/Hour or Km/Hour
Distance
Miles/Kilometers
Time
Hours
Jack runs around the 1 mile track in 7 minutes. What is
his speed?
- Speed is measured here in miles/hour
- How do we get 7 minutes into hours?
- 7 minutes
7/60 = .12 hours
1 hour
60 minutes
 15 mins = _____ Hours
 .25 Hours
 30 minutes = _____
hours
 .5 hours
 3 hours 45 minutes =
_____ hours
 3.75 Hours
D
S T
The 3 formulas for Speed, Time & Distance:
Distance
Speed =
Time
Solving for Speed
Time =
Distance
Speed
Solving for Time
Distance = Speed x Time
Solving for Distance
D
Remember them from
this triangle:
S
T
A windsurfer travelled 28 km in 1 hour 45 mins.
Calculate his speed.
Speed =
=
Distance
Time
28
1.75
D
S
T
1 hour 45 mins
= 16 km/h
Answer: His speed was 16 km / hour
A salesman travelled at an average speed of 50 km/h for
2 hours 30 mins. How far did he travel?
Distance = Speed x Time
= 50 x 2•5
D
S
T
2 hour 30 mins
= 125 km
Answer: He travelled 125 km
A train travelled 555 miles at an average speed
of 60 mph. How long did the journey take?
Distance
Time =
Speed
D
S
=
555
60
=
9•25 hours = 9 hours 15 mins
T
Answer: It took 9 hours 15 minutes
Your dad traveled 75 miles
in 2.5 hours. What was his
speed?
30 miles/hour
 Write your equation
 Change your units
 Fill in the info you know
 Solve
 Write proper units, circle
your answer
Yolanda travels 240
kilometers in 4 hours.
What was her average
speed?
60 miles/hour
 Write your equation
 Change your units
 Fill in the info you know
 Solve
 Write proper units, circle
your answer
 Mikes speed was 20
km/hour. He traveled for
10 hours. How many
kilometers did he drive?
 200 kilometers
 Write your equation
 Change your units
 Fill in the info you know
 Solve
 Write proper units, circle
your answer