a. Find the angle of a 1.5 m long frictionless ramp with the horizontal ground if a cube with a mass of 8kg is released from the top and has a velocity of 2.50 m/s at the bottom of the ramp.
b. What would the velocity be at the bottom of the ramp if there was a frictional force of 5.00 N in the opposite direction of the cubes path.