Question

A bus travels 280 km south along a straight path with an average velocity of 88 km/h to the south. The bus stops for 24 min, then it travels 210 km south with an average velocity of 75 km/h to the south.

a) How long does the total trip last?

b) What is the average velocity for the total trip?

Answer 1

I got 23011.6s for part A

Answer 2

And I got 22.6 m/s for part B

Answer 3

Alright. First off, to calculate the actual time it took for complete the trip:

3.18 h. (190 minutes) to drive 280 km.

24 minute stop time

2.8 h. (168 minutes) to drive 210 km.

Total Time: 382 minutes

Part B:

To calculate the average velocity for the entire trip:

v=d/t

Simplistic enough.

Just convert quickly...

382*60/1=22920 s

490*1000/1=490,000 m.

490,000/22920=21.37 m/s

Answer 4

to *