The mineral content of water does affect the growth of plants. My findings are very important in regard to the loss of our Louisiana wetlands and the incursion of salt water farther and farther inland into the estuaries and swamps. If we do not stop this terrible loss, all the plants and animals of these habitats could die. I will send a copy of my research to our local and state politicians and ask them to help save our wetlands. I want to know more about gravity's effect on falling objects.
Gravity is the force that pulls things toward earth.
It is the force of attraction that acts between all objects because of their mass. Scientists say that gravity's pull on a heavier object is always much stronger than its pull on a lighter object. All objects fall at the same speed. That is why both a light object and a heavy object will hit the ground at the same time when dropped simultaneously from the same height. Dr. Peter Sherman, a physicist, told me to think of it as pushing my dad and a small kid up a hill in two wagons.