A block of 5.5 kg slides down a frictionless incline making the angle of 70.0° with the horizontal.
(i) Determine the net work done on the block if the block slides 1.7 m (measured all along the incline)?
(ii) Determine the speed of the block after it has slid 1.3 m if it begins from rest?
(iii) Determine the speed after 1.3 m if it begins with the initial speed of 1.0 m/s?