Atrain is moving 4.82 m/s when it begins to accelerate. after 24.8s it is moving 7.09m/s how far did it move in that time

The train's average speed during that 24.8 seconds is 

                      (1/2) (4.82 m/s + 7.09 m/s)

                =    (1/2)    (11.91 m/s)

                =           5.955 m/s .

Traveling at an average speed of  5.955 m/s  for  24.8 sec,
it covers

                 (5.955 m/s) x (24.8 sec)  =  147.68 meters  .

Earthplanet yplanet y5=earth     *many different equationsplanet x1.5=earthplanet x is two times planet yobject 5,2500 mass5,1,3,2,4object 1 is four times obect 4

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