A boat sails along the shore. To an observer, the boat appears to move at a speed of 22 m/s, and a man on the boat walking forward appears to have a speed of 23.1 m/s. How long does it take the man to move 3 m relative to the boat?

A. 2.7 s
B. 1.3 s
C. 0.13 s
D. 0.14 s

Question

A boat sails along the shore. To an observer, the boat appears to move at a speed of 22 m/s, and a man on the boat walking forward appears to have a speed of 23.1 m/s. How long does it take the man to move 3 m relative to the boat?

 		A.	2.7 s
 		B.	1.3 s
 		C.	0.13 s
 		D.	0.14 s

anonymous · Answer

First, see if you can find the person's velocity relative to the boat. You know the person's velocity relative to the shore, and the boat's velocity relative to the shore.