Question

A ship sails west for 100km and then south for 100km. What is the displacement?

Please show me how you got the answer !

Answer 1

`\sf \vec{w}=100`

• 
  `\sf \vec{s}=100`

For displacement apply Pythagorean theorem

`\\ \rm\hookrightarrow 100^2+100^2`

`\\ \rm\hookrightarrow 10000+10000`

`\\ \rm\hookrightarrow 20000`