Kiki was driving down the street in her car. She got distracted by a butterfly and did not see the car in front of her stopping. She then rear ended the car in front that was stopped at a stop sign
Collision B because Kiki's car was also impacted by an object that was moving.
Collision C because both cars were moving at the time of the accident.
Collision A because Kiki's car would be the fragile object in this situation, which was in motion and hit a motionless object.

__can be defined as which velocity changes

Astudent is given a sample of a blue copper sulfate hydrate. he weighs the sample in a dry covered porcelain crucible and got a mass of 23.875 g for the crucible, lid, and sample. the mass of the empty crucible and lid was found earlier to be 22.652 g. he then heats the crucible to expel the water of hydration, keeping the crucible at red heat for 10 minutes with the lid slightly ajar. on colling, he finds the mass of crucible, lid, and contents to be 23.403 g. the sample was changed in the process to very light clue anhydrous cuso4. if there are again 100.0 g of hydrate, how many grams of cuso4 are in it? how many moles of cuso4? (hint: molar mass of cuso4 = 159.6 g / mole. what per cent of the hydrate is cuso4? you may convert the mass of cuso4 to moles.)

An atom of which element reacts with an atom of hydrogen to form a bond with the greatest degree of polarity ?