Question

You are marooned on a frictionless horizontal plane and cannot exert any horizontal force by pushing against the surface. How can you get off

• A. By jumping
• B. By rolling your body on the surface
• C. By splitting or sneezing or throwing any object
• D. By throwing an object in opposite direction

Answer 1

Answer: (C)

By splitting or sneezing or throwing any object

As no external force is acting on the person, thus the linear momentum of the system is conserved. Hence by spitting or sneezing or throwing any object in the forward direction, will recoil the person in the backward direction and the person can get off the frictionless horizontal plane.