Consider the motion and size of the two vehicles headed for each other on the road. Compare the kinetic energy of the vehicles.

What are two different ways you could find the value of a? explain these methods.

When the displacement of a mass on a spring is 12a the half of the amplitude, what fraction of the mechanical energy is kinetic energy? at what displacement, as a fraction of a, is the mechanical energy half kinetic and half potential?

What practical value did astronomy offer to ancient civilizations?