5.16 .. CP A 8.00-kg block of ice, released from rest at the top of
a 1.50-m-long frictionless ramp, slides downhill, reaching a speed of
at the bottom. (a) What is the angle between the ramp 2.50 m/s
and the horizontal? (b) What would be the speed of the ice at the
bottom if the motion were opposed by a constant friction force of
10.0 N parallel to the surface of the ramp?