La respuesta es la letra b
No additional force is required because it's already going downhill
Answer:
Displacement is the shortest distance travelled from the initial point to the final point. After half revolution the displacement is the length of the diameter which is equal to 2r. Hence the displacement is 2r.
I hope it will help you
plz thank my answer
plz mark me as brainliest
Satellites would be able to detect fires when they start and allow human monitors to review the information and issue warnings.
