forces - velocity

Question 1

what is the velocity of an object?

Answer 1

the speed in a given direction
eg 20m/s South - velocity
20 m/s - speed

Question 2

what quantity is velocity + why?

Answer 2

vector as it includes both magnitude and direction

Question 3

how do we calculate velocity?

Answer 3

same as speed but also state direction
distance/time (North, South, East or West)

Question 4

What is the velocity for object moving in a circle?

Answer 4

it object moved at a constant speed but it is constantly changing direction which means velocity is constantly changing even tho speed is constant
- this includes an object moving round part of a circle e.g round a corner