A motorcycle is waiting on a starting line. When the light turns green, it takes off at a constant rate of 9.7m/s^2 until it hits a tree 65m later.
a) How fast was it going when it crashed?
b) How long did this crash take from the time the light turned green?

Iron is a transition metal with multiple oxidation numbers. (answer the following) a. what is the iron (ii) ion? how does it differ from the iron (iii) ion? b. if iron were to bond with oxygen, predict the formula for each oxidation number of iron. c. how would each formula be named?