How does the author best develop the central idea of paragraph 3? A
by comparing and contrasting examples of velocity, kinetic energy, and potential energy along with examples of how all three are used at amusement parks.
B
by explaining the importance of velocity and gravity.
C
by defining and providing examples of the two types of energy used on roller coasters along with a formula of how students can calculate the energy.
D
by offering a hint that amusement parks are fun for students.