Should velocity always be in m.s. when solving?  [ENDORSED]


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Jennifer1E
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Joined: Fri Jun 23, 2017 11:39 am

Should velocity always be in m.s. when solving?

Postby Jennifer1E » Sun Jul 09, 2017 3:44 pm

When solving for the DeBroglie wavelength, should the velocity always be in m.s? I was working on a problem where the velocity was given in km hr and I was not sure if I needed to convert it into m.s.

Davalanya 1F
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Re: Should velocity always be in m.s. when solving?

Postby Davalanya 1F » Sun Jul 09, 2017 5:45 pm

In past problems, I want to say that you have to change the units because it is commonly in m*s.

Aliza Ajmal 1D
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Re: Should velocity always be in m.s. when solving?  [ENDORSED]

Postby Aliza Ajmal 1D » Thu Oct 12, 2017 1:18 pm

The SI units (standard units) are meters per second (m/s). If you're confused on what units to use, just use m/s because it will most likely be correct. However, if the problem specifies the units, then make sure to stick with those. I hope this helps!

Andrea ORiordan 1L
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Re: Should velocity always be in m.s. when solving?

Postby Andrea ORiordan 1L » Thu Oct 12, 2017 4:15 pm

To have your units correctly cancel, stick with the metric system's SI units while solving the equation. If the answer asks for velocity- say, in mph- you should complete the problem using the metric system & SI units, and then convert your answer to the desired units using dimensional analysis.

Phillip Tran
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Joined: Thu Jul 13, 2017 3:00 am

Re: Should velocity always be in m.s. when solving?

Postby Phillip Tran » Fri Oct 13, 2017 2:41 pm

I would play it safe and use m.s

Ammar Amjad 1L
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Re: Should velocity always be in m.s. when solving?

Postby Ammar Amjad 1L » Fri Oct 20, 2017 7:34 pm

Yeah, velocity should be in meters per second.

Ammar Amjad 1L
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Re: Should velocity always be in m.s. when solving?

Postby Ammar Amjad 1L » Fri Oct 20, 2017 7:34 pm

Yeah, velocity should be in meters per second.

Leanne Wong 1H
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Re: Should velocity always be in m.s. when solving?

Postby Leanne Wong 1H » Sat Oct 21, 2017 4:52 pm

Yes, velocity should be in meters per second.

Lianna Kishi 1A
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Joined: Thu Jul 27, 2017 3:00 am

Re: Should velocity always be in m.s. when solving?

Postby Lianna Kishi 1A » Sat Oct 21, 2017 7:09 pm

To be safe I would put velocity in m/s. However, my TA did an example in discussion where he left velocity in km/s and mass in g and the answer still turned out correct because the units correctly canceled with one another.

Tasnia Haider 1E
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Joined: Sat Jul 22, 2017 3:01 am

Re: Should velocity always be in m.s. when solving?

Postby Tasnia Haider 1E » Sun Oct 22, 2017 8:24 am

Velocity should be in its SI units unless state otherwise on a test.

Tylor McGrew 1J
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Joined: Fri Sep 29, 2017 7:03 am

Re: Should velocity always be in m.s. when solving?

Postby Tylor McGrew 1J » Sun Oct 22, 2017 1:20 pm

Velocity itself is measure in meters per second. Therefore, one should typically convert all values of velocity to meters per second to solve an equation.

Shreya Ramineni 2L
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Joined: Fri Sep 29, 2017 7:07 am

Re: Should velocity always be in m.s. when solving?

Postby Shreya Ramineni 2L » Sun Oct 22, 2017 2:10 pm

Velocity should always be in m/s with chemistry calculations.


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