Question

You have two contentious friends, Chris and Pat, and you’ve quickly discovered that they need you to resolve arguments they have about physics concepts. Chris says, "The spacing between two dots tells you the speed at the time of the first dot," but Pat says, "The spacing tells you the speed at the time of the second dot. How do you resolve this debate?"

Answer 1

v_average = (d₂-d₁) / Δt

this average velocity is not necessarily the velocity of the extreme points,

Step-by-step explanation:

To resolve the debate, it must be shown that the two have part of the reason, the space or distance between the two points divided by time is the average speed between the points.

v_average = (d₂-d₁) / Δt

this average velocity is not necessarily the velocity of the extreme points, in the only case that it is so is when there is no acceleration.

Therefore neither of them is right.