Answer:
[tex]12.4 ms^{-2}[/tex]
Explanation:
on the specific planet ,
weight =400 N acts downwards
astronaut gives an upward force of 462 N
according to the Newton's second law of motion ,
applying Force= mass * acceleration upwards
462 - 400 =5 * a
acceleration =[tex]12.4 ms^{-2}[/tex]
