13) A 4.00 kg box is pushed 2.00 m across a level surface by an applied force of 32.0 N, 0°. The box then slides an additional 3.00 m before coming to a rest. (a) Determine the amount of friction. (b) Determine the box’s maximum speed over the 5.00 m distance traveled.

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.