Free body diagram? Whale in free fall problem? A whale is in freefall. . Her spe

Question

Free body diagram? Whale in free fall problem?

A whale is in freefall. . Her speed vs. time is plotted in the graph. Draw r" free body diagrams of the whale at t = 0 s, at t = 20 s, and at f = 50 s. 15 What is her terminal speed? What is her instantaneous acceleration & t=10s? 0 10 20 30 40 {(s) Topic 2.1.7 Explain how you would find the total displacement of the whale during her first 30 seconds of freefall from the above graph. What does the slope of a velocity vs. time graph tell you? What does the area under an acceleration vs. time graph tell you?

Explanation / Answer

16.
Fir this question you need to provide the mass if whale
17.
Terminal speed is at 9 division
10 division corrsponds to 30 m/s
So, termical speed = 9*30/10 = 27 m/s
18.
at t = 10 s
Velocity = 15 m/s
acceleration = V/t
= 15/10
= 1.5 m/s^2
19.
Displacement = area under the curve
for 1st 30 seconds, displacement =arae under t=0 to t=30 s

20.
slope of velocity vs time graph gives instantaneous acceleration

21.
Area gives the displacement

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