Why is the motion of a body moving with a constant speed around a circular path said to be accelerated

1. Why is the motion of a body moving with a constant speed around a circular path said to be accelerated?
2. Name the unit of physical quantity obtained by the formula 2K/V², where K: kinetic energy, V: Linear velocity.

Answer: 

1. Because on a circular path the direction of motion changes continuously which changes the velocity of the body continuously.
2. kg or kilogram/g/ any unit of mass can be accepted.