October 12, 2010

Motion Sensor Graphs

D-t Graphs

This stimulation helps with understanding the displacement, velocity and acceleration graphs.

In a d-t graph, if you are walking at a constant rate away, then the line would slope upward away from the origin. If you walk at a constant rate forward, then the line would slope downward away from the origin. If the line is horizontal, there is no movement at that particular point.



A. Stand 1 m away from the origin, and stay for 1 second.
B. Walk 1.5 m away from the origin for 2 seconds.
C. Stand 2.5 m away from the origin, and stay for 3 seconds.
D. Walk 0.75 m toward the origin for 1.5 seconds.
E. Stand 1.75 m away from the origin, and stay for 2.5 seconds.



A. Stand 3 m away from the origin, and walk 1.5 m toward the origin for 3 seconds.
 B. Stand 1.5 m away from the origin, and stay for 1 second.
 C. Walk 1 m toward the origin for 1 second.
 D. Stand 0.5 m away from the origin, and stay for 2 seconds.
 E. Walk 2 m away from the origin for 3 seconds.



A. Stand about 0.8m away from the origin, and walk 1 m away from the origin for 3.5 seconds.
B. Stand 1.8 m away from the origin, and stay for 3 seconds.
C. Walk 1.3 m away from the origin for 3 seconds.

 
V-t Graphs

In a v-t graph, a straight horizontal line represents walking at a constant speed, therefore the speed doesn't change. If the line slopes upward or downward depending on the direction, the speed has changed. When the line is at 0, there is no movement.



A. Speed up for 4 seconds.
B. Walk at a velocity of 0.5 m/s away from the origin for 2 seconds.
C. Walk at a velocity of 0.4 m/s toward the origin for 3 seconds.
D. Stay for 1 second.



A. Stay for 2 seconds.
B. Walk at a velocity of 0.5 m/s away from the origin for 3 seconds.
C. Stay for 2 seconds.
D. Walk at a velocity of 0.5 m/s toward the origin for 3 seconds.



A. Walk at a velocity of 0.35 m/s away from the origin for 3 seconds.
B. Speed up, still away from the origin, for 0.25 second.
C. Slow down, now toward the origin, for 0.25 second.
D. Walk at a velocity of 0.35 m/s toward the origin for 3 seconds.
E. Slow down, toward the origin, for 0.25 second.
F. Stay for 3 seconds.

No comments:

Post a Comment