A 285-kg stunt boat is driven on the surface of a lake at aconstant speed of 13.5 m/s toward a ramp, which is angled at27.1° above the horizontal. The coefficient of friction between the boat bottom and the ramp'ssurface is 0.150, and the raised end of the ramp is 1.90 m above the water surface.
a) Assuming the engines are cut off when theboat hits the ramp, what is the speed of the boat as it leaves the ramp?
b) What is the speed of the boat when it strikes the water again? Neglect any effects due to air resistance.