The discussion revolves around calculating the average speed of a driver on a road trip, given specific average speeds for two segments of the trip. The problem involves variables A and B, which represent values that affect the average speeds, and participants are exploring how to interpret and solve the problem based on these values.
The discussion is ongoing, with various interpretations being explored. Some participants have provided guidance on unit conversions and the need for clarity in the problem statement. There is no explicit consensus on the final average speed, and participants are still working through the calculations.
Participants note that the original problem statement may lack clarity regarding the definitions of A and B, and there is a mention of the potential confusion caused by the way the problem is presented. The discussion reflects a range of understanding among participants, with some being new to physics.
Lana Elcic said:.807.
Why are you dividing this? I'm just trying to fully understand the problem for the test! :)
Bystander said:48.4/60 = ?
Bystander said:2 hrs is 120 min, 48.4 min. is .8xxx hrs. --- ?
2.8066?Bystander said:Total time in hours is then what?
Nope. Right idea.Lana Elcic said:So is it just 140 km / 2.48 hr = 56.452?
Nope.Lana Elcic said:Doesnt 168.4 minutes convert to 2.48 hours?
... and the answer is ...?Lana Elcic said:2.8066?
Bystander said: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.
You're in business.Lana Elcic said:Round your final answer to three significant figures.
So 49.9!Bystander said:You're in business.