please solve

16. A body of mass 109 moves with 3th of amplitude 24 cm and period 4 e. The coordinate is +24 om when t = 0. Compute (a) the position of the body when t = 0.5 s [1? cm] (In) the force acting at t = 0.5 e. [-4.19I1D4 N] (o) the minimum me required for the body to move from its initial position to the point where it = -12 em (d) the velocity of the body when x = 42 cm. {32.6 cmfe]