1. II. Describing Motion Graphing
Ch. 11 Motion & Forces
II. Describing Motion
Graphing

2. E. Graphing Motion slope = speed steeper slope = straight line =*
07/16/96
E. Graphing Motion
Distance-Time Graph A B
slope =
steeper slope =
straight line =
flat line =
speed
faster speed
constant speed
no motion *

3. E. Graphing Motion Who started out faster? A (steeper slope)
Distance-Time Graph A B
Who started out faster?
A (steeper slope)
Who had a constant speed? A
Describe B from min.
B stopped moving
Find their average speeds.
A = (2400m) ÷ (30min) A = 80 m/min
B = (1200m) ÷ (30min) B = 40 m/min

4. E. Graphing Motion
Distance-Time Graph
Acceleration is indicated by a curve on a Distance-Time graph.
Changing slope = changing velocity

5. E. Graphing Motion acceleration slope = +ve = speeds up
Speed-Time Graph
acceleration
+ve = speeds up
-ve = slows down
slope =
straight line =
flat line =
constant accel.
no accel. (constant velocity)

6. E. Graphing Motion Specify the time period when the object was...
Speed-Time Graph
Specify the time period when the object was...
slowing down
5 to 10 seconds
speeding up
0 to 3 seconds
moving at a constant speed
3 to 5 seconds
not moving
0 & 10 seconds