Question

A feather is dropped onto the surface of the moon. How far will the feather have fallen if it reaches the surface in 9.00 seconds?

Answer 1

use the kinematic equation for position,

x=x(0)+v(0)t+1/2at^2

count the starting point as zero to make it easier, there is no initial velocity, so just pug in 9 seconds into the equation and everything except acceleration cancels so: x=1/2at^2, the gravity of the moon is 1/6 the gravity of earth btw

Answer 2

Why is there no initial velocity ?

Answer 3

because it is being dropped, that implies that it starts from rest

Answer 4

wtf is the damm answer