A girl swings on a playground swing in such a way that at her highest point she is 2.2 m
from the ground, while at her lowest point she
is 0.9 m from the ground.

What is her maximum speed? The acceleration due to gravity is 9.8 m/s^2.
Answer in units of m/s.

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.

luster is not a good characteristic to use by itself because luster is the property of minerals that indicates how much the surface of a mineral reflects light. the luster of a mineral is affected by the brilliance of the light used to observe the mineral surface.

i think its d if wrong im sorry