2. An object is dropped from rest. Calculate its velocity after 2.5s if it is dropped:
a. On Earth, where the acceleration due to gravity is 9.8m/s?.
b. On Mars, where the acceleration due to gravity is 3.8m/s?

Jenny wants to test the electrical conductivity of two substances dissolved in water. she is preparing the containers for the experiment. which factor is most important for her to control? a) volumes of the solutions b) appearance of the solutions c) temperatures of the solutions d) concentrations of the solutions