MAXIMUM POINTS (will give brainliest to first correct answer): An astronaut is training in a human centrifuge to prepare for a launch. The centrifuge spins the astronaut at speed v, and she experiences a force F pushing inwards on her back.

If the centrifuge operator decreases the astronaut's speed to 1/2v, what force will the astronaut experience on her back?
NOTE: I initially chose A, which is incorrect. Please show your work!!