4. A 3.05 kg block, initially stationary at the bottom of a smooth 40" incline, is pushed 4.75 m up the incline by a horizontal force of 28.3 N (see 3.05 kg diagram alongside). 28.3 N 40 The work done by the applied force over the 4.75 m is S e The gain in potential energy by the block after moving 4.75 m is J. (1) The speed the block is moving after travelling 4.75 m is m/s