A 540- Kg,10-M-Long Boat Is Placed Perpendicular to a Dock

Multiple Choice

A 540- kg,10-m-long boat is placed perpendicular to a dock. When a 60-kg boy starts walking from the end to the front of the boat, the front of the boat touches the dock. The boy's distance from the dock when the boy reaches the front of the boat is

A) 0.0 m.
B) 0.50 m.
C) 1.0 m.
D) 4.5 m.
E) 5.5 m.