Velocity +/- Values


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Jonathan Pai 2I
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Joined: Fri Sep 28, 2018 12:27 am

Velocity +/- Values

Postby Jonathan Pai 2I » Sun Oct 21, 2018 3:27 pm

A homework problem gave us the velocity which was 5+/-5, so the delta v was 10. What if the velocity is 57+/-4, is delta v 8, 53, or 61? Is it just the +/-(uncertainty) that is the delta v value?

Ibrahim Malik 1H
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Re: Velocity +/- Values

Postby Ibrahim Malik 1H » Sun Oct 21, 2018 3:37 pm

From what I can tell, the delta-v value would be 61. In your first example, delta-v, or change in velocity, is a total of 10 because the velocity ranges from -5 to +5. So going from -4 to +57, there would be a delta-v of 61.

Emmanuel Ogunrinde 3L
Posts: 14
Joined: Fri Sep 28, 2018 12:24 am

Re: Velocity +/- Values

Postby Emmanuel Ogunrinde 3L » Sun Oct 21, 2018 10:40 pm

Yeah the uncertainty would always be the range between the two values. But I think they would always gives us even ranges like -1/+1, -3/+3, or -12/+12, and not uneven ranges like -12/+2, -3/+4, or -9/+4.

Sean Reyes 1J
Posts: 67
Joined: Fri Sep 28, 2018 12:24 am

Re: Velocity +/- Values

Postby Sean Reyes 1J » Wed Oct 24, 2018 11:25 am

Delta v just implies the range of values that velocity could take on.
So if you are given +57/-4, then the values that velocity could take on ranges between those 61 values of velocity.


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