The position vector of a particle varies with time as vec(r)=vec(r_(0)) ( 1 - alpha t) t where vec(r_(0)) is a constant vector & alpha is a positive constant then the distance covered doring the time interval in which particle returns to its initial position is :

The position vector of a particle varies with time as vec(r)=vec(r_(0)

1.	The position vector of a particle varies with time as vec(r)=vec(r_(0)) ( 1 - alpha t) t where vec(r_(0)) is a constant vector & alpha is a positive constant then the distance covered doring the time interval in which particle returns to its initial position is :
Answer» `r_(0)//ALPHA` `r_(0) // 2 alpha` `sqrt(r_(0)^(2)+(r_(0))/(alpha))` `sqrt(r_(0)^(2)+(2r_(0))/(alpha))` ANSWER :B