A box of mass sits on the floor of an elevator. The area of the bottom surface of the box is 0.250 m2. When the elevator

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A box of mass sits on the floor of an elevator. The area of thebottom surface of the box is 0.250 m2.
When the elevator is moving upward at a constant speed of 2.00m/s the pressure the box exerts on the
floor is 981 pascal. (Note: One Pascal equals one Newton persquare meter; 1 Pa = 1 N/m2). Calculate the
pressure the box exerts on the floor while the elevator
a. slows uniformly from an upward speed of 2.00 m/s to zero in3.00 seconds.
b. accelerates uniformly from rest to a downward speed of 2.00m/s in 3.00 seconds.
c. slows uniformly from a downward speed of 2.00 m/s to zero in3.00 seconds.
d. is moving downward at a constant speed of 2.00 m/s
e. accelerates uniformly from rest to an upward speed of 2.00m/s in 3.00 seconds
f. is at rest