6.5.4.1.3 velocity

Question 1

What is velocity

Answer 1

the velocity of an object is its speed in a given direction

Question 2

Is velocity a vector or scalar quantity

Answer 2

vector

Question 3

An object moving in a circular orbit has a changing velocity, How come?

Answer 3

Velocity is a vector quantity, depending on speed and direction. The object in orbit is accelerating, even tough speed remains constant, because its velocity is changing