1. axis :)
the straight line around which rotation takes place.in internal axis the object rotates.
2. rotation :)
also known as spin; the spinning motion that takes place when an object rotates about an axis located within the object (usually an axis through its center mass).ex: carnival ride and the skater rotate
3. revolution :)
when an object turns about an external axis(outside the object).ex: revolves; riders along the outer platform edge revolve about its axis
4. linear speed :)
distance moved per unit of time. also called simple speed.ex: point on outer edge of the merry go roundgreater when away from the axis
5. tangential speed :)
the speed of something moving along in a circular path. the direction of motion is always taangent to the circle.ex: circular motion
6. rotational speed :)
angular speed; the number of rotations per unit time.(in the same amount of time or the same number of rotations per unit of time)ex: merry go round
9. centripetal force :)
a centered directed force that causes an object to move in a curved path but sometimes circular path
