Question: 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

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 2-46.

(a) What is the acceleration of gravity on this planet?

(b) What was the initial speed of the rock?

In Figure 2-46.

y (m) 30 25 20 15 10 t(s) 6 7 3 4 5

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