Shown here are the velocity and acceleration vectors for an object in several different types of motion. In which case is the object slowing down and turning to the right

Two particles $\mathrm{A},\mathrm{ }\mathrm{B}$ are moving on two concentric circles of radii $R_1$ and $R_2$ with equal angular speed $\omega .$ At $t=0,$ their positions and direction of motion are shown in the figure:

The relative velocity $\overrightarrow{V_A}-\overrightarrow{V_B}$ at $t=\frac{\pi }{2\omega }$ is given by:

Two parallel discs are connected by a rigid rod of length $L=0.5 \mathrm{m}$ centrally. Each disc has a slit oppositely placed as shown in the figure. A beam of neutral atoms is incident on one of the discs axially at different velocities $v$, while the system is rotated at angular speed of, $600 \mathrm{rev} {\mathrm{s}}^{-1}$, so that atoms only with a specific velocity emerge at the other end. Calculate the two largest speeds (in meter/second) of the atoms that will emerge at the other end.

A clock has a continuously moving second's hand of $0.1 \mathrm{m}$ length. The average acceleration of the tip of the hand (in units of $\mathrm{m} {\mathrm{s}}^{-2}$) is of the order of :

Two blocks of masses $m$ and $2 \mathrm{m}$ connected by a massless string move along concentric horizontal circles on a horizontal frictionless table with $O$ as fixed point as shown in the figure. If $T$ is the period of motion, the tension in the longer part of the string is (Neglect the dimensions of the blocks when compared with the lengths of the string).