About force

[RIDDLE]

Could someone explain the ans in b（i)

 

[HallsofIvy]

"b)  Consider when the "Mega-Drop" falls with acceleration.

i) Compare the vertical forces acting on the passenger with those mentioned in (a)(ii)."

 There is still the "weight", the downward force due to gravity.  If this were "freefall" there would be no upward force due to the seat but that isn't actually said.  If there were some acceleration downward but not freefall the upward force due to the seat will be less than the weight of the passenger.

Edited February 28, 2019 by HallsofIvy