Question

1. in procedure 2 part 2: each \corner\ on the velocity vs. time graph shows the speed of the cardboard changing from zero to some value, or vice versa. what must the acceleration (the instantaneous change in velocity with time) look like at these times? explain!

Explanation:

Acceleration is the slope of the velocity-time graph. At a "corner", velocity changes instantaneously, so the slope (acceleration) is undefined (infinite).

Answer:

The acceleration is undefined (or infinite) at these times.