Which organ is used to detect the product of neutralisation reaction

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

Stage in which a typical star has completely stopped fusion

Is powdered sports drink ionic or covalent ? 10pts !