Question

1. the point where a line intersects the vertical axis is called the y - intercept. for the velocity versus time graph, the y - intercept has a physical meaning. what does this point on the graph mean? did you make another measurement of the same variable? how do the two values relate to each other?

Explanation:

The y - intercept of a velocity - versus - time graph represents the initial velocity of the object (the velocity at time t = 0). A point on the graph shows the velocity of the object at a particular time. The two values (y - intercept and a general point value) are related in that the general point value is the velocity at a specific time, and the y - intercept is the starting velocity. If another measurement is related, it could be acceleration which is the rate of change of velocity (slope of the velocity - time graph).

Answer:

The y - intercept is the initial velocity. A point on the graph shows velocity at a specific time. They are related as the point's velocity is at a later time from the initial velocity given by the y - intercept. Another related measurement could be acceleration (slope of the graph).