Thread Closed

Average Speed/Average Velocity Problem

 
Share Thread Thread Tools
Sep20-04, 04:24 PM   #1
 
Exclamation

Average Speed/Average Velocity Problem


I have a physics problem here that I need help solving. I need to figure out how to find the average speed and average velocity of a trip.

City A to City B is 55 miles with an angle 7.86 degrees west of north.

City B to City C is 75.5 miles with an angle 25.9 degrees west of north

City C to City D is 208 miles with an angle of 41.1 degrees west of north

City D to City E is 98.8 miles with an angle of 5.45 degrees north of west

----I take one 10 minute stop to fill up gas.


Then I return taking a scenic route:

City E to City F is 89 miles with an angle of 24.1 degrees east of south

City F to City G is 23.6 miles with an angle of 14.8 degrees east of south

City G to City H is 194 miles with an angle of 41.2 degrees south of east

City H to City A is 88.0 miles with an angle of 18.4 degrees south of east

--------I spend 45 minutes at each city on the way back

--------Average Speed for entire trip is 53.7 mi/h


1. what is the average speed and average velocity from City A to City C?

2. what is the average speed and average velocity from City C to City E?

3. What is the average speed and average velocity from City E to City A on the return?


Any help would be greatly appreciated!
 
PhysOrg.com
PhysOrg
science news on PhysOrg.com

>> 'Whodunnit' of Irish potato famine solved
>> The mammoth's lament: Study shows how cosmic impact sparked devastating climate change
>> Curiosity Mars rover drills second rock target
Sep20-04, 04:25 PM   #2
 
Recognitions:
Gold Membership Gold Member
Homework Helper Homework Help
Science Advisor Science Advisor
Any help might be given if you show some of your own work!
 
Sep20-04, 04:28 PM   #3
 
Do I break this down into all the x and y components? of each vector?


Our book uses average speed and average velocty as if they were the same, what is the main difference
 
Sep20-04, 04:33 PM   #4
 
Recognitions:
Gold Membership Gold Member
Homework Helper Homework Help
Science Advisor Science Advisor

Average Speed/Average Velocity Problem


Velocity is a vector quantity; speed is the (scalar) magnitude of that quantity.
 
Sep20-04, 06:09 PM   #5
 
speed = total distance / total time

velocity = change in displacement/change in time

r cos angle= x component

r sin angle= y component

this is all I know
 
Thread Closed
Thread Tools


Similar Threads for: Average Speed/Average Velocity Problem
Thread Forum Replies
Constant velocity questions (average speed vs. average velocity) Introductory Physics Homework 2
Average speed & average velocity Problem Introductory Physics Homework 11
Average speed & average velocity Problem Introductory Physics Homework 1
Average Speed vs. Average velocity Introductory Physics Homework 41
Average speed and average velocity?? Introductory Physics Homework 1