Question

A 0.500 kg block is being slid, vertically up the chalkboard with an applied force of 6.00 N [upwards] and 2.00 N [inwards] (into the boards). If the coefficient of sliding friction is 0.400, calculate the accel of the block.
bobpursley
net force=ma
6-mg-2*.4=ma

solve for a
teed
can i get a better explanation since im having a hard time getting the concept. thanks =)