distance-time graphs z a straight line shows an object moving at a constant speed! z the steeper the...
TRANSCRIPT
DISTANCE-TIME GRAPHS
A straight line shows an object moving at a constant speed! The steeper the line, the faster the object is moving!
CONSTANT SPEED!!!!!!
0
10
20
30
40
0 1 2 3 4 5 6 7 8 9 10 11
Time (s)
Medium slower faster
Work out the speed for each object shown in the graph!
Click to find out the answers!
1. Yellow line
30/10 = 3 m/s
2. Blue Line
20/10 = 2 m/s
3. Pink line
10/10 = 1 m/s
STATIONARY OBJECTS!
A flat, horizontal line shows a stationary object!
STATIONARY OBJECT!!!!
0
2
4
6
8
10
12
0 1 2 3 4 5 6 7 8 9
Time (s)
ACCELERATING OBJECTS
ACCELERATION!!!
0
5
10
15
20
0 1 2 3 4 5 6
Time (s)
Dis
tan
ce (
m)
Curved lines show if an object is accelerating or decelerating!
The steeper the line gets the faster the object is moving!
GRAPH QUESTIONS!
0
2
4
6
8
10
12
14
0 1 2 3 4 5 6 7
Dis
tan
ce
(m)
Time (s)
MAN WALKING A CAT 1. What is the speed of the
man during the first three seconds?
2. What is the man doing between 3 and 5 seconds?
3. Calculate the speed of the man between 5 and 7 seconds.
4. What is the total distance that he has moved?
5. Calculate the average speed for the whole journey.
• 1. 12/3 = 4 m/s
•2. Stationary
•3. 12/2 = 6 m/s
•4. 24 m
•5. 3.4 m/s
Click for answers!
Draw a distance-time graph showing your journey to school!
Try to include different gradients to show different speeds. Remember – steep slope is fast, gentle slope slow!!
Try to include rough distances and times at key points on your graph.
Sketch a distance -time graph for a parachute jump! Think carefully!!!!
Describe the motion of the jogger in each section of the graph!