$=1$

A $a^{201}{v}_0=0\frac{m}{s}$

$B$

$c$

The mechancal energy at point $A$ is the same as the mechanical energy at point $C.$

Tha knetce energy at point $B$ is greater than the kinetic energy at point $A$

The potentalenergy of the mass at point B is the same as its potential energy at point $C.$

Tha prientelenergy of the ball decreases as it moves from point $A$ to $B$ then from $B$ to $C.$