Find the minimum initial height of the roller coaster if the roller coaster is to complete the diameter loop.

Find the minimum initial height of the roller coaster if the roller coaster is to complete the diameter loop.

A spring with hangs vertically next to a ruler. The end of the spring is next to the mark on the ruler. If a mass is now attached to the end of the spring, where will the end of the spring line up with the ruler marks?

A spring with hangs vertically next to a ruler. The end of the spring is next to the mark on the ruler. If a mass is now attached to the end of the spring, where will the end of the spring line up with the ruler marks?

A crate, starting from rest, is pulled across a floor with a constant horizontal force of . For the first the floor is frictionless and for the next the coefficient of friction is . What is the final speed of the crate?

A crate, starting from rest, is pulled across a floor with a constant horizontal force of . For the first the floor is frictionless and for the next the coefficient of friction is . What is the final speed of the crate?

A child descends a slide high and reaches the bottom with a speed of . How much thermal energy due to friction was generated in this process?

A child descends a slide high and reaches the bottom with a speed of . How much thermal energy due to friction was generated in this process?

A runner arrives at the bottom of a hill. He runs up the hill with a constant acceleration until he reaches the top, then runs at a steady pace along the top of the hill. When are the kinetic and potential energies of this man at their greatest?

A runner arrives at the bottom of a hill. He runs up the hill with a constant acceleration until he reaches the top, then runs at a steady pace along the top of the hill. When are the kinetic and potential energies of this man at their greatest?