A 30-Kg Block Is Dragged Over a Rough Horizontal Surface by by a Constant

Multiple Choice

A 3.0-kg block is dragged over a rough horizontal surface by a constant force of 16 N acting at an angle of 37 $\degree$ above the horizontal as shown. The speed of the block increases from 4.0 m/s to 6.0 m/s in a displacement of 5.0 m. What work was done by the friction force during this displacement?

A) (-34 J)
B) (-64 J)
C) (-30 J)
D) (-94 J)
E) +64 J