019 (part 1 of 3) 10.0 points Starting from rest, a 5.89 kg block slides 2.9 m down a rough 25.3 incline. The coefficient of kinetic friction between the block and the incline is 0.495. The acceleration of gravity is 9.8 m/s. Find the work done by the force of gravity. Answer in units of J. 020 (part 2 of 3) 10.0 points Find the work done by the friction force be- tween block and incline. Answer in units of J. 021 (part 3 of 3) 10.0 points Find the work done by the normal force. Answer in units of J.