Question
A toy car with charge q moves on a frictionless horizontal plane surface under the influence of a uniform magnetic field \xrightarrow[{E }]{} . due to force q\xrightarrow[E]{} , its velocity increases from 0 to 6m/s in one second duration . At that ins†an t the direction of the field reversed . The car continues to move for two more second under the influence of this field . the average velocity and the average speed of the toy car between 0 to 3 second are respectively.