Calculating Average Speed on a Road Trip | Physics Help for Beginners

[Lana Elcic]

Total time in hours is then what?

2.8066?

 

[Bystander]

So is it just 140 km / 2.48 hr = 56.452?

Nope. Right idea.

Doesnt 168.4 minutes convert to 2.48 hours?

Nope.

2.8066?

... and the answer is ...?

Sorry about all the distractions. I know it's enough to rattle anyone. Couple or three things to remember: 1) try to post in the HW forum (for physics questions, anyway); 2) one step at a time; 3) re-read the question to be certain you're answering what's been asked; 4) pay attention to details, particularly when converting units (minutes to hours is something public schools haven't done correctly for ~ 20 years); 5) PF busy season has just started the last week or two, and there can be a lot of help that just isn't.

 

[Lana Elcic]

Nope. Right idea.

Nope.

... and the answer is ...?

Sorry about all the distractions. I know it's enough to rattle anyone. Couple or three things to remember: 1) try to post in the HW forum (for physics questions, anyway); 2) one step at a time; 3) re-read the question to be certain you're answering what's been asked; 4) pay attention to details, particularly when converting units (minutes to hours is something public schools haven't done correctly for ~ 20 years); 5) PF busy season has just started the last week or two, and there can be a lot of help that just isn't.

It's okay I understand. Just trying to focus. Is the answer 49.882?

 

[Bystander]

Round your final answer to three significant figures.

You're in business.

 

[Lana Elcic]

You're in business.

So 49.9!
Yayyyyyy!

 

[berkeman]

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