Help with 8,9,10

Use the diagram below to answer the next 3 questions. An object starts from rest at a height of 5.00 m, and then slides off a frictionless ramp. When it leaves the ramp, it is at a height of 3.00 m and it has a horizontal velocity vn. Vi = 0 Vh = ? 5.00 m 3.00 m ? X NR 8 Find the horizontal velocity vn at the end of the ramp. Your solution could involve the the law of conservation of energy, or you could use kinematics. The mass of the object is irrelevant, but if you feel you need it you could set it to 1.00 kg. NR 9 From the diagram, find the time, t, it takes for the object to hit the ground, once it leaves the ramp. NR 10 Calculate the horizontal distance x, also known as the range. To allow EVERYONE the chance to get this right, you will assume that the horizontal velocity was 9.65 m/s