Posted: 12 Apr 2010 05:26 pm Post subject: Physical Science
A skydiver jumps out of a hovering helicopter, so there is no forward velocity. Use this information to answer questions 1-9. Ignore wind resistance for this example.
1. What is the sky diver's acceleration?
2. Just as the skydiver steps out of the helicopter, someone who's watching starts a stopwatch. So the time is zero as the skydiver steps out of the plane. What is the skydiver's downward velocity at that instant, just before starting to fall?
3. What is the Skydiver's velocity after one second? Show your work and include direction.
4. What is the skydiver's velocity after two seconds? Show your work and include direction.
5. After three seconds, what is the skydiver's velocity? Show your work and include direction.
6. Use the axes below to graph the skydiver's velocity. Remember that negative velocity should be graphed below the x-axis. Be sure to include numerical and word labels, with units, for both axes.
7. Look at your graph in the question above. Use your knowledge of the relationships among graphs. What shape would the Displacement Versus Time for this skydiver be?
8. What is the skydiver's average velocity for the first 3 seconds? Show work.
9.Is the skydiver's increasing or decreasing his speed during the first 3 seconds? Explain your answer.
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