# CarA and B

#### roza-chan

1. The problem statement, all variables and given/known data
car A goes from london to birmingham with 25m/s vilocity,car B goes from london to nottingham with 25m/s

2. Relevant equations
velocity=displacement/time

3. The attempt at a solution
are those two car's velocity equal?explain it

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#### Doc Al

Mentor
Well, what do you think? Hint: What's the key difference between velocity and speed?

#### roza-chan

velocity has directions but speed doesn't have one......does this get to something?

#### Doc Al

Mentor
velocity has directions but speed doesn't have one......does this get to something?
Exactly. So ask yourself: Are the directions the same?

#### roza-chan

yeah they are both to north....so they are equal right?

#### Doc Al

Mentor
yeah they are both to north....so they are equal right?
I have no idea where Birmingham and Nottingham are, but if they are both exactly north of London then their displacements from London will have the same direction.

#### roza-chan

ya they are both in north of london,so if they are both going with 25m/s and both to north (same direction)so that means they are equal right?

#### Doc Al

Mentor
OK, I'm now looking at a map of the UK. I would say that neither city is directly North of London, and if I draw a displacement vector from London to each city, those vectors don't look parallel to me!

#### roza-chan

umm well ya one of them is more north and the other is a bit to east...and which mean they're not exactly the same direction..so it means they are not equal after all?

#### Doc Al

Mentor
umm well ya one of them is more north and the other is a bit to east...and which mean they're not exactly the same direction..so it means they are not equal after all?
That's what I would say. (More important than any particular answer is knowing the reasoning behind it.)

#### roza-chan

thanx alot for the help~~

"CarA and B"

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