Question

suppose a ball is thrown vertically upward.Eight seconds later it returns to its point of release.What is initial velocity of the ball.

Answer 1

dont know ??? :D

Answer 2

dont know

Answer 3

what formula to use

Answer 4

1 min !

Answer 5

V=s/t

Answer 6

i think u r wrong @RaoAbdulAhad

Answer 7

Use \(v=u+at\)

v=-u
-u=u-gt
gt=2u
u=gt/2
=10*8/2

Answer 8

why v=-u

Answer 9

??

Answer 10

when it reaches the ground it has the same velocity as the initial velocity. Since the direction is opposite u put - in front of it

Answer 11

ok thx

Answer 12

yw.:)