A ball is projected vertically upward

PHYSICS · Single correct · A Level · Physics · Mechanics and materials · Mechanics and materials

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

(b)

v=0

and

a

is upward with magnitude

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

(c)

v=0

and

a

is downward with magnitude

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

(d)

v=0

and

a

is downward with magnitude

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