Are motion and position relative or not?

How can we determine if an object is stationary or moving?

$A$ boy walks uniformly along the sides of a rectangular park of size $400 \, m \times 300 \, m$,starting from one corner to the diagonally opposite corner. Which of the following statements is incorrect?

The position of a body moving along the $x$-axis at time $t$ is given by $x = (t^2 - 4t + 6) \, m$. The distance travelled by the body in the time interval $t = 0$ to $t = 3 \, s$ is ...... $m$.

$A$ person travels $10\, km$ north and $20\, km$ east. What will be the displacement from the initial point in $km$?

$A$ car moves with a speed of $60 \, km/h$ for $1 \, h$ in the east direction and with the same speed for $30 \, min$ in the south direction. The displacement of the car from the initial position is ......... $km$.