Astronauts on a distant planet throw a rock straight upward and record its motion with a v...

Astronauts on a distant planet throw a rock straight upward and record its motion with a video camera. After digitizing their video, they are able to produce the graph of height, y, versus time, t, shown in Figure 2-36. (a) What is the acceleration of gravity on this planet? (b) What was the initial speed of the rock?

FIGURE 2-36 Problem 101