Checkpoint 1

1. Figure C1 shows a portion of the graph of `s=ct^2`. Note that the function values on the vertical scale are multiples of the constant `c`. Use this figure to calculate the instantaneous speed at the instant `t = 5 text(.)` (Your answer should contain the constant `c`.)
   
   Figure C1   A zoom-in view of the graph of s = ct².

2. Recall that `c` is approximately `4.90 text(.)` Find the numerical value of the instantaneous speed (in meters per second) of an object that has been falling for `5` seconds.

3. Does this agree with your estimate in Activity 1?