A block of mass 1.2 kilogram slides down an inclined surface of length 1.0 meter. The inclined surface makes an angle of 30o with the horizontal. Its initial velocity is1.0 m/s. When it reaches the bottom it has a velocity of 2.0m/s.
a) Evaluate the initial mechanical energy of the block?
b) Find the work done by the force of kinetic friction?
c) Find the force and the coefficient of kinetic friction?