What state you live in? because I know someone who does it for free
Answer:
constant appearance
Explanation:
this mean that a pure substance will have a constant appearance ,colour,density ,melting point and boiling point
KE = (1/2)(m)(v^2)
KE = (1/2)(7)(4^2)
KE = (1/2)(112)
KE = 56 J
