I know it's being picky, but force is equal to mass times acceleration Not strictly true. Stationary objects can exert a force on other objects. A book on a table exerts a force on the table (resisted by an equal and opposite force by the table on the book). This might involve the potential for acceleration (due to gravity), but there is no acceleration in play.


Mass*velocity = kinetic energy


I accept I may have made errors in the above as well. A-level physics was 48 years ago.