A 2.1 kg block is initially at rest on a horizontal frictionless surface when a horizontal force in the positive direction of anxaxis is applied to the block. The force is given by (x) = (4.2 -x2) N, wherexis in meters and the initial position of the block isx= 0.(a)What is the kinetic energy of the block as it passes throughx= 3.3 m?(b)What is the maximum kinetic energy of the block betweenx= 0 andx= 3.3 m?

Thanks a ton.