When an object is falling and reaches a constant velocity, the net force on the object is and the weight of the object is equal

a. zero; the mass of the object
b. 10; the speed at which the object is falling
c. 10; acceleration due to gravity
d. zero; the force of air resistance against the object

When an object is falling and reaches a constant velocity, the net force on the object is zero (it's not accelerating), and the weight of the object is equal to the force of air resistance against the object.  (choice-D)

if the thermos has a vacuum innner, then heat through conv currents and conduction are reduced = vacuum flask

c) up

hope this