The acceleration a of a particle is given by:Given that the initial displacement at t=0 is -1.4m and the velocity is 15m/s, find expressions for the velocity and displacement given that Calculate the velocity and displacement of the particle after 100m/s, giving answer to 2 decimal places.Could I get help with this question typed and the question in the photo please.

(a) Consider the second order differential equation Find the current i in terms of t for the initial conditions when t = 0, both i = {II and (b) By applying Kirchhoffs law to a parallel PLC circuit, we obtain the second order differential equation Where i is the current through the circuit and I is the dc. current source applied to the circuit. The capacitance , inductance , resistance and . Find an expression for i in terms of t