015 (part 1 of 2) 10.0 points Starting from the top and at rest a block slides down an inclined plane and has a velocity of 1.25 m/s at the bottom. The inclined plane makes a 25.3" angle with the horizontal and is 3.47 m long. The mass of the block is 4.88 kg. The acceleration of gravity is 9.8 m/s m What is the potential energy of the block at the top of the incline? Assume the bottom of the incline as zero of potential energy. Answer in units of J. 016 (part 2 of 2) 10.0 points What is the coefficient of friction between the block and the plane