[سر النبوغ]

A stationary block of 10 kg is pulled up along a smooth incline of
length 10 m and height 5 m by applying an external force of 50 N parallel
to the incline. At the end of incline, find (i) work done by the external
force, (ii) work done by gravity, and (iii) speed of the block.كيف حله بالتفصيل ماني فاهمته