A string is wound around a piece of hollow cylindrical pipe. The free end of the string is held while the pipe is released, allowing the pipe to fall while unwinding the string, much like a yoyo. The string unwinds without slipping. What would be the translational acceleration of the pipe?

Be sure you have shown your ID, your calculator, your scratch paper, and your workspace to the camera. A list of equations and conversion factors can be found here: Equations for Midterm Exam 2-1.pdf 

A baseball (solid sphere) is rolling without slipping along the level ground with a translational speed of 10.0 m/s. It then starts rolling without slipping up a hill, stopping after having traveled 25.0 m along the surface of the hill. What angle does the hill make with the horizontal? 

Be sure you have shown your ID, your calculator, your scratch paper, and your workspace to the camera. A list of equations and conversion factors can be found here: Equations for Midterm Exam 2-1.pdf 

Which one of the following is not a major fossil fuel?

Of the energy topics we’ve covered this semester, which one does not impact our water supply

A merry-go-round with a mass of 150 kg is coasting at 3.0 rad/s. Think of the merry-go-round as a solid cylinder with a radius is 3.0 m. A 45kg kid is riding the merry-go-round, standing on its rim. Just after the kid steps radially off the merry-go-round, what is the angular velocity?

A turntable rotating at 78.0 rpm slows to 33.33 rpm in 5.0 revolutions. If the acceleration is constant, the time it takes for the angular speed to change is

Three identical cylindrical disks have a common axis.  Initially one of the disks is spinning.  When the three disks are brought into contact, they stick together.  Which of the following is/are true? (Choose all that are correct)

A police car is chasing another car that was used in a bank robbery. The police car has a mass that is 1.2 times the mass of the car it is chasing. The police car has a speed of 40.0 m/s, and the other car is traveling at 35.0 m/s. The police car rams the back of the robber’s car. Afterward, the police car is going 35.0 m/s. How fast would the robber’s car be going after the collision?