3) A block of mass m is sliding down an incline at an angle 0 with respect to the horizontal. Assume that the acceleration due to gravity is "g". a. If the block slides d meters down the ramp and the ramp is frictionless, how fast will the block be going once it travels that distance if it begins its slide from rest? (5 points) b. How much work will gravity have done in this scenario? (5 points) c. Now assume that there is friction between the ramp and the block, with a coefficient of kinetic friction k, how much work will friction do if the block slides d meters down the ramp? (10 points)