[" 28."A" 10kg mass moves along "x" -axis.Its acceleration as a function of its poins,"],[" is shown in the figure.What is the work done on the mass by the force as the "],[" mass moves from "x=0" to "x=8cm" .work done on the mass by the force as the "],[[57,x=0" to "x=8cm?],[,x(cm/s^(2))],[(x)/(8)+1+(20)/(20)+(1)/(6)*(1)/(6)*(1)/(6)(1)/(10)+x(cm),=(1)/(2)],[(1)8times10^(-2)J," (3) "4times10^(-4)J," (4) "1.6times10^(-3)J]]