Question

can any one give me 2 examples for linear and circular motion
and 4 diffrence b/w speed and velocity and their si units and formula used

Answer 1

examples of linear motion are ---
 * car moving on a straight road
 * ball dropped from top of a building

examples of circular motion are ---
 * motion of an electric fan 
 * motion of a spinning top
 
             speed                                                         velocity 
* distance travelled by an object               * the distance travelled by an object
 per unit time                                              in a particular direction pr unit time 
* it is scalor quantity                                  * it is vector quantity                        
* speed tells how fast an object                * it tells how fast an object moves 
  moves                                                      and in which direction
* speed of an object is always                 * velocity can be positive or
 positive                                                           negative