Question

Approximately when did the peak speed occur? (a) 25 s (b) 20 s (c) 10 s (d) 5 s

Solution

Verified
Step 1
1 of 2

The peak speed occurs when the acceleration becomes zero.

It is like a skydiver while falling down. The initial speed of him is zero and it increases until the drag force due to the air will be equal to the weight of the skydiver. At this moment, (when the two forces became equal), the speed of the skydiver is reached its maximum value.

But because we do not know if the acceleration of the airplane becomes zero at the end of the test, or not, then we will choose the last moment of acceleration in the given table.

That's because the acceleration is still in the positive direction, the speed of the airplane is increasing.

Note that, if the angle changed to the right side of the vertical dashed line (becomes a negative), then the acceleration of the airplane is negative and it is slowing down.

That is not the case which means that the airplane is speeding up along its test process.

Therefore, the peak speed occurs at the time of 25 s which is choice a.

Create an account to view solutions

By signing up, you accept Quizlet's Terms of Service and Privacy Policy
Continue with GoogleContinue with Facebook

Create an account to view solutions

By signing up, you accept Quizlet's Terms of Service and Privacy Policy
Continue with GoogleContinue with Facebook

Recommended textbook solutions

Physics for Scientists and Engineers: A Strategic Approach with Modern Physics 4th Edition by Randall D. Knight

Physics for Scientists and Engineers: A Strategic Approach with Modern Physics

4th EditionISBN: 9780133942651 (5 more)Randall D. Knight
3,508 solutions
College Physics: Explore and Apply 2nd Edition by Alan Heuvelen, Eugenia Etkina, Gorazd Planinsic

College Physics: Explore and Apply

2nd EditionISBN: 9780134601823Alan Heuvelen, Eugenia Etkina, Gorazd Planinsic
3,177 solutions
Mathematical Methods in the Physical Sciences 3rd Edition by Mary L. Boas

Mathematical Methods in the Physical Sciences

3rd EditionISBN: 9780471198260Mary L. Boas
3,355 solutions
Fundamentals of Physics 10th Edition by David Halliday, Jearl Walker, Robert Resnick

Fundamentals of Physics

10th EditionISBN: 9781118230718 (4 more)David Halliday, Jearl Walker, Robert Resnick
8,950 solutions

More related questions

1/4

1/7