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?

Given: g on moon = –1.63 meters/second2

A.
14.0 meters
B.
14.7 meters
C.
16.00 meters
D.
66.0 meters

Answer 1

well if it was in space, then wouldnt the feather float away bc there would be no gravity...

Answer 2

Gravity exists on the moon, as the moon exerts a gravitational force due to its mass.

you’ll have to use the kinematics equation

x = v0*t + (1/2)at^2

Since it’s dropped from rest, v0 = 0 and the expression simplifies to

x = (1/2)at^2, where a is the gravitational constant (given in the problem, don’t use earths g-value) and t is the time (given as 9 seconds)