[Hoshi]

لو سمحتوا كيف تنحل هذي المسألة :

The coordinate of a particle in meters is given by x(t) = 16t – 3 t3, where the time t is in
seconds. The particle is momentarily at rest at t =
a)0.75 s b) 1.3 s c)5.3 s d)7.3 s