A cylinder of mass m and a block of wood of mass m are both released from rest at a height h on an inclined plane at the same time. The cylinder rolls down the plane without slipping due to friction. The block slides down the incline. If they both experience the same frictional force, which has more total kinetic energy when they reach the bottom?

A. The cylinder
B. The block
C. they have the same total kinetic energy when they reach the bottom
D. there is not enough information to answer this question

Simon is writing a story about an astronaut whose spacecraft has been boarded by space pirates. the astronaut has her lucky penny in her hand behind her back as the space pirates break into the control room. she has just locked the controls so that the ship is accelerating in the direction of the control room’s ceiling. simon wants the astronaut to use the penny to hit a button on the control panel to turn off the lights and escape. the button is located a short distance behind and below the astronaut’s hands. how should simon use the theory of relativity to describe what the astronaut must do in order to hit the button?