Your site is not helping me into details why ?

Using the periodic table, complete the table to describe each atom. type in your answers.a ? b? c? d? e? f?

Can someone me with these questions plz.

Aroller coaster car is traveling down a track at 22 m/s. the car has a mass of 2000 kg. what is the kinetic energy of the car? a) 22,000 j b) 968,000 j c) 484,000 j d) 44,000 j