A body of mass $1 \mathrm{kg}$ is acted on by a force $\left(F\right)$ which varies with time $\left(t\right)$ as shown in the graph below. The momentum acquired by the body in $2 \mathrm{s}$ if it starts from rest is

A ball is suspended by a cord from the ceiling of a car. What will be the effect on the position of the ball if

$\left(\mathrm{i}\right)$ The car moves with uniform velocity?

$\left(\mathrm{ii}\right)$ The car accelerates?

$\left(\mathrm{iii}\right)$ The car turns towards left?