A heavy ball swings on a string in a circular

arc of radius $2$ m$.$

Q

$2$ m

Q$$

P

$30$

The two highest points of the ball$$s trajec$-$

tory are Q and Q$$; at these points the string is

$30$ from the vertical. Point P is the lowest

point of the ball$$s trajectory where the string

hangs vertically down.

The acceleration of gravity is $9\mathrm{.}8$ m$/$s$2.$

What is the ball$$s speed at the point P$?$ Ne$-$

glect air resistance and other frictional forces.

Answer in units of m$/$s$.$

$038($part $2$ of $6)10\mathrm{.}0$ points

What is the magnitude of the ball$$s accelera$-$

tion at the point P$?$ Answer in units of m$/$s$2.$