na-adjective
Describes something characterized by constant change, activity, or progress; often used in technical or academic contexts.
このシステムは力動的な変化に対応できる。
This system can adapt to dynamic changes.
彼の力動的なリーダーシップがチームを成功
His dynamic leadership led the team to success.
ダイナミック is a loanword from English 'dynamic' and is more casual and widely used; 力動的 is more formal and technical.
Compound of 力 (power, force) + 動 (movement) + 的 (-like, -ic). The exact historical derivation is uncertain; the spelling is conventionally associated with the meaning 'dynamic'.