A particle moving along a straight line is subjected to deceleration g = -2 m/s^2. If it has a velocity v = 8 m/s and a position s = i when t = 0, which equation is most recommended to solve the velocity and position when t = 4 s?
5 - 50 = vo*t + 1/2*a*t^2
v - vo = 2*a*s - 5*t
ds = v*dv/dt*dt = ds
v - vo = 2*a*s - 5*t*d
a*t = dv/ds - so = vo*t + 1/2*a*t^2