4. (12 pts) Watch this video of SpaceX launch of a Starlink Mission from the Vandenberg

https://www.youtube.com/watch?v=ag YuEAkEljw

Space Force Base in California:

(a) Using Excel, Python, any other computer program, or a graphing calculator, make a

graph of the speed of the Stage 1 rocket as a function of time between t = 00:00:00

(launch) and t = 00:09:00 (landing, 9 minutes after launch). Include in your PDF exam

upload, a printout, photo or screenshot of your graph.

Hint #1: You should use at least 50 points (1 point every ~10 seconds) to make your

graph. During time intervals when the speed changes rapidly, you should consider

plotting I point every ~2 seconds.

Hint #2: For guidance on how to make this graph using Microsoft Excel, visit this

Canvas page:

https://uab.instructure.com/courses/1606356/pages/guidance-on-numerical-graphs-

derivatives-and-integrals

(b) Describe in words how the speed of Stage 1 (revealed by your graph) changes as a

function of time between t = 00:00:00 and t = 00:09:00.

(c) Make a graph of the tangential acceleration of Stage 1 between t = 00:00:00 and

t = 00:09:00. Include in your PDF exam upload, a printout, photo or screenshot of your

graph.

Hint: The tangential acceleration is the acceleration along the trajectory.

(d) Describe in words how the tangential acceleration of Stage 1 (revealed by your graph)

changes as a function of time between t = 00:00:00 and t = 00:09:00. Explain the

reasons for any abrupt changes in acceleration, and the meaning of the sign (positive

or negative) of the acceleration.

(e) Calculate the distance (in kilometers) traveled by Stage 1 along its trajectory between

t = 00:00:00 and t = 00:09:00.