The van travels over the hill described by y = (-1.5(10-3) x2 + 15) ft. If it has a consta...

The van travels over the hill described by y = (-1.5(10-3) x2 + 15) ft. If it has a constant speed of 75 ft/s, determine the x and y components of the van’s velocity and acceleration when x = 50 ft.