The position of a particle moving on x-axis is given by x=At3+Bt2+Ct+D. The numerical value of A,B,C,D are 1,4,-2 and 5 respectively and S.I. units are used. Find velocity of the particle at t=4 sec. -2 and 5 respectively and S.I. units are used. Find velocity of the particle at t=4 sec. 4 B C [...]