A ball is projected vertically upward with speed and the upward direction is taken as…

PHYSICS · Single correct · CBSE · Physics · Gravitation · Gravitation

Problem

A ball is projected vertically upward with speed

u

and the upward direction is taken as positive. Its acceleration during flight is

a

. Which choice gives the correct signs of

u

and

a

? (a)

u>0,\;a>0

(b)

u<0,\;a>0

(c)

u>0,\;a<0

(d)

u<0,\;a<0