I have a really difficult question i need help on. A 1.9-kg block slides down a frictionless ramp. Ths top of the ramp is 1.5-m above the ground; the bottom of the ramp is 0.25-m above the ground. The block leaves the ramp moving horizontally, and lands a horizontal distance 'd' away. Find the distance 'd'. Oh and the ramp is curved so the block slides horizontally when it leaves the ramp. Help please!