41. A spaceman of mass 80 kg is sitting in a spacecraft near the surface of the Earth. The spacecraft is accelerating upward at five times the acceleration due to gravity. What is the force of the spaceman on the spacecraft?
(A) 4800 N
(B) 4000 N
(C) 3200 N
(D) 800 N
(A) 4800 N
(B) 4000 N
(C) 3200 N
(D) 800 N