You are testing a new amusement park roller coaster with an empty car with a mass of 125 kg. one part of the track is a vertical loop with a radius of 12.0 m. at the bottom of the loop (point a) the car has a speed of 25.0 m/s and at the top of the loop (point b) it has speed of 8.00 m/s.

This is important 1. what happens to the speed of molecules in water vapor when it condenses to form a liquid? (2 points) the molecules slow down. the molecules speed up. the molecules slow down and then speed up. the molecules speed up and then slow down. 2. how might human activities change to compensate for a decrease in water supplies? (2 points) humans might build a factory. humans might build drainage systems. humans might extract more water from the ground. human behavior does not change because of the water cycle. i'll be grateful if anyone can answer these 2 questions !