What determines how much kinetic energy an object has? A. Mass and speed/velocity

B. only speed

C. Only mass

D. Height and mass

The mass and speed/velocity determines the kinetic energy an object has.

☆ionisation energy increases across a period from na -> ar☆ionisation energy decreases down a group from li -> fr☆ionic radius decreases across a period from na -> cl☆ionic radius increases down a groupfrom f -> ii hope it clarifies your doubts