Physics

Problem

A ball is projected vertically upward. Which one of the following statements correctly describes its velocity

v

and acceleration

a

at the highest point of its flight? a)

v=0

and

a=0

v=0

and

a

is upward with magnitude

9.8\,\text{m/s}^2

v=0

and

a

is downward with magnitude

9.8\,\text{m/s}^2

v=0

and

a

is downward with magnitude

4.9\,\text{m/s}^2