Answer:
Explanation:
a ) 4 gees = 4 x 9.8 m/s²
= 39.2 m/s²
b ) The reaction force from the wall of the rocket will act on the astronaut as compressing force and it will be equal to
mass x acceleration
= m x 39.2 N
Where m is the mass of the astronaut . ( he is in gravity free space )
It is equal to four times the weight of the man .
c ) When rocket engine is turned off , there will be no acceleration in the spaceship and both spaceship and astronaut will move with the same velocity . Hence there will be no reaction force from the wall.