A solid ball with a mass of 1.89 kg and a radius of 0.069 m starts from rest at the top
of a 25.7
◦
slope with a vertical height of 2.90
m. It proceeds to roll without slipping down
the slope.
What is the translational speed of the ball
when it reaches the bottom? The acceleration
of gravity is 9.81 m/s
2
.
Answer in units of m/s.

Amoving company collects data about couches they move and displays the data in a table. the force along the ramp, the angle of the ramp, and the height the couch is raised to are shown. which statements correctly compare the work done to move the couches? check all that apply. the same amount of work is done for couches 1 and 3. the same amount of work is done for couches 2 and 3. the work for couch 1 is greater than the work for couch 2. the work for couch 2 is less than the work for couch 3. the work for couch 3 is greater than the work for couch 1. the work for couch 2 is greater than the work for couch 1.