What happens to the ice pack over time?

2pos suppose an object in free fall is dropped from a building. its starting velocity is 0 m/s. ignoring the effects of air resistance, what is the speed (in m/s) of the object after falling 3 seconds? give your answer as a positive decimal without units. answer here

How many valence electrons are in atom of radon?

Which of the following is a chemical property of water at 4 c