Question

You are on a cruise ship traveling north at a speed of 13 m/s with respect to land. 1)If you walk north toward the front of the ship, with a speed of 3.2 with respect to the ship, what is your velocity with respect to the land?2)If you walk south toward the back of the ship, with a speed of 3.2 with respect to the ship, what is your velocity with respect to the land?)your friend is sitting on another cruise ship traveling south at 14 m/s. As you walk toward the back of your ship at 3.2 m/s, what is your velocity with respect to your friend?

Answer 1

Here ,

speed of ship , vs = 13 j m/s

1)

speed of person , v1 = 3.2 j m/s

velocity relative to land = vs + v1

velocity relative to land = 13 + 3.2

velocity relative to land = 16.2 j m/s

the velocity relative to land is 16.2 m/s in the north direction

2)

speed of person , v1 = - 3.2 j m/s

velocity relative to land = vs + v1

velocity relative to land = 13 - 3.2

velocity relative to land = 9.8 j m/s

the velocity relative to land is 9.8 m/s in the north direction

3)

for speed of friend , vf = -14 m/s

velocity relative to friend = v - vf

velocity relative to friend = 9.8 - (-14)

velocity relative to friend = 23.8 m/s

the velocity relative to friend is 23.8 m/s in north direction