what is instantaneous speed?...distance is the measurement or quantity known as “how much ground...
TRANSCRIPT
Must Read:On the front of this worksheet, you’ll see a
data table. This data table shows the time and the distance of the wolf. The speed calculated, however, is not calculated as average speed. The speed calculated is instantaneous speed.
There has been much confusion on this because so many students and teachers are used to calculating average speed. As you know, average speed is taking a total distance divided by total time. However, in this worksheet, you are not calculating the average speed.
In this data table, you are taking each change in distance divided by each change in time… giving you the speed of the wolf at each second (or its instantaneous speed.)
For better understanding of this concept, please watch the following video:
WHAT IS INSTANTANEOUS SPEED?
NAME __________________________ DATE ________
Time (s) Distance (m) Speed (m/s)
0 0 0
1 5
2 15
3 30
4 50
5 70
6 75
7 75
8 70
9 60
10 40
A wolf sees a rabbit and goes for its prey.
Calculate the speed of the wolf, using the
table below, and then illustrate its motions
using the graphs to the right. Do not forget
to label your graphs and show correct units.
The Wolf’s Change in Distance
The Wolf’s Change in Speed
➢On the Speed/Time Graph, each line
must be labeled as one of the following:
• Speeding Up
• Slowing Down
• Constant Speed
• Stationary
➢On the Distance/Time Graph, label the
parts of the graph where the wolf was:
• Speeding Up
• Slowing Down
• Constant Speed
• Stationary
GRAPHING INSTRUCTIONS: Label the X-
axis and the Y-axis with name and unit of
measurement. Number the lines logically.
1. Did the wolf ever run at a constant
speed? Explain your answer.
__________________________________
__________________________________
2. Was the wolf ever at rest? If yes,
then how do you know?
__________________________________
__________________________________Copyright © 2015 Travis Terry
QR CODE:What is INSTANTANEOUS SPEED?
➢INSTRUCTIONS: Differentiate between distance and displacement for
the wolf that started at point A and traveled as shown to point B.
A B
Distance: ____
Displacement: ____
A
B
Distance: ____
Displacement: ____
➢What is the definition of DISPLACEMENT?
________________________________________________________________
________________________________________________________________
➢Describe how the wolf’s distance and displacement would be
exactly the same, but in a different place from where it began.
________________________________________________________________
________________________________________________________________
➢What is the definition of DISTANCE?
________________________________________________________________
________________________________________________________________
Copyright © 2015 Travis Terry
Copyright © 2015 Travis Terry
SPEED
(m/s)
NAME __________________________ DATE ________
Time (s) Distance (m) Speed (m/s)
0 0 0
1 5 5
2 15 10
3 30 15
4 50 20
5 70 20
6 75 5
7 75 0
8 70 5
9 60 10
10 40 20
A wolf sees a rabbit and goes for its prey.
Calculate the speed of the wolf, using the
table below, and then illustrate its motions
using the graphs to the right. Do not forget
to label your graphs and show correct units.
The Wolf’s Change in Distance
The Wolf’s Change in Speed
➢On the Speed/Time Graph, each line
must be labeled as one of the following:
• Speeding Up
• Slowing Down
• Constant Speed
• Stationary
1. Did the wolf ever run at a constant
speed? Explain your answer.
__________________________________
__________________________________
2. Was the wolf ever at rest? If yes,
then how do you know?
__________________________________
__________________________________
Yes, from 3 to 5 seconds, the
wolf ran for 20 m/s
Yes, at 7 seconds and 75 meters,
the wolf reached 0 m/s.
80
70
60
50
40
30
20
10
1 2 3 4 5 6 7 8 9 10Time (s)
DISTANCE
(m)
20
15
10
5
1 2 3 4 5 6 7 8 9 10Time (s)
KEY
SPEEDING UPCONSTANT
SPEED
SLOWING DOWN
STATIONARY
SPEEDING UP
SPEEDING UP
CONSTANTSPEED
SLOWINGDOWN
SPEEDING UP
STATIONARY
➢On the Distance/Time Graph, label the
parts of the graph where the wolf was:
• Speeding Up
• Slowing Down
• Constant Speed
• Stationary
GRAPHING INSTRUCTIONS: Label the X-
axis and the Y-axis with name and unit of
measurement. Number the lines logically.
QR CODE:What is INSTANTANEOUS SPEED?
➢INSTRUCTIONS: Differentiate between distance and displacement for
the wolf that started at point A and traveled as shown to point B.
A B
Distance: ____
Displacement: ____
A
B
Distance: ____
Displacement: ____
➢What is the definition of DISPLACEMENT?
______________________________________________________________
________________________________________________________________
➢Describe how the wolf’s distance and displacement would be
exactly the same, but in a different place from where it began.
________________________________________________________________
________________________________________________________________
➢What is the definition of DISTANCE?
________________________________________________________________
________________________________________________________________
Distance is the measurement or quantity known as “how
much ground an object has covered” during its motion.
Displacement is the difference between the initial, or
starting, position and the final position
17
3
27
1
If the wolf were to move straight forward for a specific
distance and stop without changing direction.
Copyright © 2015 Travis Terry