Position and Displacement question.

[ybhathena]

Homework Statement

You walk to the corner store after school to buy a carton of milk before going home. The store is 750 m south of the schoo, and your house is 625 m north of the school. What is your net displacement.

Homework Equations

dT=d1+d2

formula for displacement

The Attempt at a Solution

625-750
= -125

I do not think this is right. Please help!

 

[HallsofIvy]

No, it isn't. The first thing you need to do is review the meaning of "net displacement". You started at school and wound up at home. How far from your starting point are you?

 

[ybhathena]

From school to home I am 625 m away.

 

[tiny-tim]

hi ybhathena!

You walk to the corner store after school to buy a carton of milk before going home. The store is 750 m south of the schoo, and your house is 625 m north of the school. What is your net displacement.

From school to home I am 625 m away.

then that's the answer!

(except that displacement is a vector, so you need to specify the direction also )