Calculating Average Velocity of a Meteor using Radar Coordinates

[tater08]

Homework Statement

A meteor streaking through the night sky is located with radar. At point A its coordinates are (5.60 km, 1.40 km, and 1.10 s later its has moved to point B with coordinates (6.12 km, 0.900 km).

Find the magnitude of its average velocity between these two points

Homework Equations

none really

The Attempt at a Solution

I found the vx to be 0.473 km/s and vy to be -0.455 km/s. From this I took average velocity of the magnitude to be y/x to be -0.455/0.473. But the answer is wrong. Am I on the right track or am i doing it completely wrong? Please Help! Thanks

 

[edziura]

"From this I took average velocity of the magnitude to be y/x to be -0.455/0.473"

Not sure what this...

Anyway, given the components vx and vy you have, the magnitude of this vector, and thus the average speed, is

vav = sqrt((vx)^2 + (vy)^2)

 

[tater08]

haha thanks, i figured it out that i was way off and should have used the pathagerom therom. thank you for the help anways!