Contact us
Choose a category below so we can get back to you as quickly as possible.
剎車時間 t 不是 t0 初速V,末速vt=0 加速度a=(末速-初速)/ t 這裏條件不足,加速度是個不定值.
We and our partners use cookies and other technologies to analyze traffic and optimize your experience. View more info and control your cookies settings at any time in our Cookies Policy.