# Math Help - A golf ball is released from rest at the top of a very tall bulding.

1. ## A golf ball is released from rest at the top of a very tall bulding.

A golf ball is released from rest at the top of a very tall bulding.
Neglecting air resistance , caclulate the position and velocity of the ball after 1 , 2 and 3 s

Given :
v0 = 0
g = -9.81
t 1,2,3

now we use v = v0 + at for each time

v = -9.81 X (1) =-9.81
v = -9.81 X (2) = -19.6
v = -9.81 X (3) = -29.7

now we find Dx ?

Is my step correct ?

2. v is correct.

For the position, you can use:

$s = v_o t + \dfrac12 at^2$