A 841 kg block is pushed on the slope of a 31◦
frictionless inclined plane to give it an initial
speed of 50 cm/s along the slope when the
block is 2.1 m from the bottom of the incline.
The acceleration of gravity is 9.8 m/s^2. What is the speed of the block at the bottom of the plane?
Answer in units of m/s.
