(Figure 1) shows the motion diagram for a horse galloping in one direction along a straight path. Not every dot is labeled, but the dots are at equally spaced instants of time.
Figure1 of 1
A motion diagram for an object has 8 dots. For the first dot, the time is not given, and the distance is 600 meters. For the second dot, the time is 10 seconds, and the distance is 500 meters. For the third dot, the time is not given, and the distance is 400 meters. For the fourth dot, the time is 30 seconds, and the distance is 350 meters. For the fifth dot, the time is not given, and the distance is 300 meters. For the sixth dot, the time is 50 seconds, and the distance is 250 meters. For the seventh dot, the time is not given, and the distance is 150 meters. For the eighth dot, the time is 70 seconds, and the distance is 50 meters. Part A
What is the horse's velocity during the first 10 seconds of its gallop?
Part B
What is the horse's velocity during the interval from 30s
s
 to 40s
s
?
Part C
What is the horse's velocity during the interval from 50s
s
 to 70s
s
?
