Sure, but they must be properly secured and stowed in accordance with the weight and balance diagram of the plane. For that, the pilot or loadmaster will need to know the gross weight.
Yes, you can take airplane blankets with you on your flight.
You have a ball on an airplane..
Depends on the kind of airplane.
no
No.
no
No, matter weights do not change while in an airplane flying through the air. Weight is the force of gravity acting on an object, and this force remains constant regardless of whether the object is on the ground or in the air. The sensation of weightlessness experienced in an airplane is due to the feeling of free-fall rather than a change in actual weight.
From where.
Yes, you can.
Yes
no
yes