Aroller coaster starts down a hill at 10 m/s. three seconds later its speed is 32 m/s. what is the roller coaster acceleration?

Apaleontologist finds a plant fossil that shows that the plant had seeds. what can the paleontologist conclude?

What is a limitation of using a chemical formula, such as c6h1206, to represent a compound? the chemical formula does not show the types of elements that make up the compound. the chemical formula does not show how the atoms are connected to one another the chemical formula does not show the number of atoms of each element in a molecule. the chemical formula does not show the chemical symbols of the elements in the compound

The human body needs energy in order to carry out life processes such as breathing. where does the body get this energy? a. from eating food b. from learning about new things c. from lying in the sun d. from sleeping