A 2.0kg block is moving on a frictionless track with a speed of 6m/s at a height of 5.0m above the ground. Take g=9.8m/s2.
a. (i) Calculate the kinetic energy of the block at this position.
b. (ii) Calculate its potential energy with respect to the ground.
c. (iii) Determine its total mechanical energy at that instant.