Can someone me in the 7th one plss

Aferris wheel is a vertical, circular amusement ride with radius 9 m. riders sit on seats that swivel to remain horizontal. the ferris wheel rotates at a constant rate, going around once in 9 s. consider a rider whose mass is 56 kg. at the bottom of the ride, what is the perpendicular component of the rate of change of the rider's momentum? at the bottom of the ride, what is the vector force exerted by the seat on the rider?

Why should seat belts not be mandatory quick plz

Dao makes a table to identify the variables used in the equations for centripetal acceleration. what quantities belong in cells x and y?