3. A person with mass, m, who is located at or near Discuss what happens when the person is in an
elevator which is
a) not accelerating
b) moving up with an acceleration
c) moving up with deceleration
d) going down and decelerating
e) going down and accelerating

Which of the following situations is impossible? a) an object has velocity directed east and acceleration directed east. b) an object has zero velocity but non-zero acceleration. c) an object has constant non-zero velocity and changing acceleration. d) an object has velocity directed east and acceleration directed west. e) an object has constant non-zero acceleration and changing velocity.