Acar has the velocity of 2.35 after 4.67 it's velocity is 9.89 what is the average acceleration

Average acceleration  =  (change in speed) / (time for the change) .
  
Change in speed = (ending speed) - (beginning speed)

                       =  (9.89 miles/hour) - (2.35 yards/second)  = 26,839.2 ft/hr

Acceleration  =  (26,839.2 ft/hr) / (4.67 days)  =  2,873.58 inch/hour²  

The magnets would be | n s | and | s n|

The best description is: . nobody has any idea what q is.