Moving Man

DISTANCE FROM Walking Man (reference point) to….	The House	The Wall	The tree
	8	10 , -10	-8

DISPLACEMENT FROM Walking Man (reference point) to….	The House	The Wall	The tree
	8 Meters	10, -10 meters	-8 Meters

Distance represents how far away the object started, to where it ended after movement. Distance is how far an object traveled.



An object speed is how fast the object is moving at a given time, where as an objects velocity measures an objects speed, and direction.

	SPEED	TIME	DISTANCE COVERED
TRIAL #1	1 meter/sec (slower)	2 seconds	2 meters
TRIAL #2	4 meter/sec (faster)	2 seconds	8 meters

1. In both of the above trials you gave the man 2 seconds to run. At what velocity did he cover more distance?
Trial 2, because hsi velocity was higher.

2. Speed is calculated by comparing (dividing) the distance with the time.  Divide the distance by the time for each trial above. Write the speeds below
TRIAL #1 1 meters divided by 2sec = .5m/sec

TRIAL#2 4meters divided by  2sec = 2m/sec


Moving slowly.

 Moving quickly.

 Standing still.

 Moving and increasing speed.

 Increasing, then decreasing speed.

1) EXPLAIN the difference in motion represented by a straight line and a curving line on a
“distance vs. time” in terms of constant or changing speed.
A straight line implies that the targets position is not changing. A curved line represents the targets moving at a quicker pace.



2) Changing speed is called “acceleration” (speeding up) or deceleration (slowing down).
Describe the shape of an acceleration line on a Distance vs. Time graph of acceleration.
Acceleration slopes upwards, where a deceleration slopes downwards.

3) EXPLAIN the difference between the motion represented by a flat line and a sloping straight
line in a “distance vs. time” graph.
A flat line means no movement, and a sloped line means the object is moving.



4) If the slope of a line on a “distance vs. time” graph is steep. What is different about the
motion then when it is not steep?
When it is not steep, it means the object is moving slowly.

5) Look at the graph below and answer the following questions.
A) CALCULATE the average speed/velocity between point B & Point C by finding the slope of
the line between the 6th and 15th seconds (show work below)
10m in 8secs         10m divided by 8 sec = 1.25 mps


B) Why is the line sloping upward to the right between the 2nd & 3rd second, but downward to
the right between 6th and the 15th seconds?
It shows acceleration and deceleration.