Register to reply 
Vector displacement 
Share this thread: 
#1
Sep2307, 11:32 AM

P: 2

1. The problem statement, all variables and given/known data
A motorist drives south at 28.0 m/s for 3.00 min, then turns west and travels at 25.0 m/s for 2.00 min, and finally travels northwest at 30.0 m/s for 1.00 min. For this 6.00 min trip, find the following values: Total vector displacement, average speed, and average velocity. 2. Relevant equations dX/dT dV/dT 3. The attempt at a solution I can find the average speed and average velocity. I can also get the magnitude of the total vector displacement. The problem I'm having is the angle. I don't even know who to approach this problem to find the angle. 


#2
Sep2307, 02:20 PM

HW Helper
P: 4,125

What is the total vector displacement? How did you find the magnitude?



#3
Sep2307, 03:23 PM

P: 2

all I had to do is add up the magnitudes of the vectors. I don't need the angle to find the magnitude.



#4
Sep2307, 05:52 PM

HW Helper
P: 4,125

Vector displacement
Suppose I travel 40m east, then 20m west. The total distance travelled is 60m. The displacement is 20m east... ie the magnitude of the total displacement is 20m. You need to find the total displacement... ie add up the vector displacements... then at the end... find the magnitude of that. 


Register to reply 
Related Discussions  
Question about total vector displacement, BUGGING ME OUT  Introductory Physics Homework  4  
Displacement over a vector  Introductory Physics Homework  0  
Displacement of a vector (Really simple)  Introductory Physics Homework  4  
Vector displacement equation trouble  Introductory Physics Homework  4  
Projectile Motion (Displacement and Velocity vector)  Introductory Physics Homework  14 