A 1kg block slides without friction along the positive x-axis. A horizontal force acting in the direction of motion varies with displacement according to F(x)=4x+3N, where x is measured in metres. The block moves from x=0 to x=5m in 4s.
a. (i) Calculate the work done by the force during this displacement.
b. (ii) Determine the average power supplied to the block over the given time interval.