relative motion?

Question

wats relative speed?
relative velocity?
relative displacement?

how the heck do u calculate them?
and plz explain this if u can:
A bird flies 80 m due east in 19s. The bird turns around and flies 8m due west in 10.0s. What is the magnitude of the average displacement (in m) of the bird during the entire time interval?

Answer 1

For all practical purposes, speed and velocity are the same. However, technically speaking, one of them can be negative. Velocity is displacement per unit time.
Speed is absolute instantaneuos value of velocity.

Relative velocity is velocity of one object in relation to the other, as if the other object was standing still. If you have two cars next to each other driving South, both of them with 40 mph, the relative velocity of car 1 to the car 2 is zero. If you are sitting in car 2 and looking at car 1 it looks to you like car 1 is not moving relative to you. If car 2 decided to drive 50 pmh then relative velocity would be 10 mph - this is what you'd see from the window.

I can tell you about displacement, you will have to figure out about relative and average displacement. Displacement is a vector drawn from the point of the origin of motion to the point of the end of motion.

Relative displacement has to do with 2 bodies. You subtract Displacement1 from Displacement2 using the vector rules.

Answer 2

go to gogole and reserch it im sure you will find a answer to all
your listed questions
well good luck
if nothin works go to a library
but i doubt u will have to do dat