Because its velocity is changing all the time. The speed is constant, the velocity is not.
Yes. You can travel in a circle at constant speed, but you would still be accelerating because your direction would be changing constantly.
An object traveling in a circle is accelerating because it constantly changes its direction even though the velocity may or may not change in magnitude.
When an object is traveling with constant speed in a circle
Yes, yes, correct so far. Please go on.
uniform
Yes. You can travel in a circle at constant speed, but you would still be accelerating because your direction would be changing constantly.
direction
An object traveling in a circle is accelerating because it constantly changes its direction even though the velocity may or may not change in magnitude.
When an object is traveling with constant speed in a circle
Yes, yes, correct so far. Please go on.
Yes. The simplest example is an object moving at a constant speed in a circle.
uniform
uniform
uniform
Acceleration is change in velocity. These are vectors that have magnitude and direction. Changing either magnitude (speed) or direction will have the skater be accelerating. SO, if the skater is going at a constant speed of 2m/s in a straight line, he is not accelerating. If he is at a constant speed of 2m/s traveling in a circle (you gave the word "around"), he is accelerating. Going around in circles means there is a force constantly changing your direction. Obviously that force is coming from the skaters legs.
constant-iRLANDA
An object moving in a circle at constant speed is accelerating because its direction is constantly changing.