Afeather 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

The feather's vertical position is determined by

We take the feather's starting position to be the origin, and the downward direction to be positive. Then

so the answer is D.

powerful computers now, not then

firearm identification is the process of analyzing the bullets and cartridge cases left at a crime scene to determine if they came from a particular firearm. marks on the bullets and cartridges may be common to every firearm of that type. these are called class characteristics.