Question

what does the slope of a tangent line on a position vs. time graph tell you? the objects instantaneous velocity the objects displacement the objects average velocity the objects acceleration

Explanation:

The slope of a tangent line on a position - vs - time graph represents the rate of change of position with respect to time at a particular instant. By definition, this is the instantaneous velocity. Displacement is the change in position over an interval, average velocity is total displacement over total time, and acceleration is the rate of change of velocity.

Answer:

The object's instantaneous velocity