The formula of rate acceleration at the initial moment of college physics is urgent! ! ! ! ! !
Given the velocity-time relationship V(t), V(t=0) is the initial velocity, and the acceleration is the first derivative of velocity with respect to time A (t) = DV/DT;
Given the relationship between positioning and time r(t), velocity is the first derivative V(t)=dr/dt of displacement and acceleration is the second derivative a(t)=d2r/dt2 of displacement.