Answer:Man's acceleration is 0.452
in downward direction
Step-by-step explanation:
Weight of man, W= 650 N
Normal force exerted by floor of elevator , N= 620 N
Since weight , W = mg
mass m=

Using Newtons 2nd law
W-N= ma where a= acceleration of man in the downward direction
=> 650-620=

=> a= 0.452
in downward direction