Trace the distance-time graph and the tangent at $t = 1$ second on your paper. Distance $d$ is measured in feet.

1. Estimate the velocity at $t = 1$ s.

   Hint (a):

   Estimate the slope of the tangent.

2. Locate another time on the graph where the object has the same velocity as $t = 1$. Use you graph to show how you know the velocities are equal.

   Hint (b):

   Sketch various tangent lines to the graph of $y = d(t)$. Keep sketching until you find one with the same slope as the tangent at $t = 1$.

   Hint (b):

   Parallel lines have the same slope.