Question

During a planned manoeuvre in a space flight, a free-floating astronaut A pushes another free floating astronaut B, the mass of A being greater than that of B. Then, the magnitude of the force exerted by astronaut A on astronaut B is:

• A. equal to zero
• B. equal to the force exerted by B on A
• C. greater than the force exerted by B on A
• D. less than the force exerted by B on A

Answer 1

Answer: (B)

equal to the force exerted by B on A

According to Newton third law every , every action and equal and opposite reaction, the moment A pushes B with force F , so A will also experience the same force F but in opposite direction.