I know this question seems very stupid. I don't know much about the deformation and derivation of calculation formulas. Thank you very much for your reply
我是一名高中生,对加速度的一些计算感到困惑,请与我分享一些信息
(translation by the Mentors via Google Translate):
"I am a high school student and confused about some calculations of acceleration please share some information with me"