Question

a boy travels 10m due north and 7m due east. find the displacement by vector method​

Answer 1

Answer:

12.2m

Step-by-step explanation:

Here 10 m north means +y axis10j and 7m east means +x axis so 7i

displacement will be shortest path so 10 m and 7 m forms a right angle triangle whose hypotenuse is displacement

displacement=(10)2+(7)2=100+49=149≈12.2m

Answer 2

Step-by-step explanation:

Displacement of the boy is in the form of a right angled triangle with base 7m and altitude 10m. hence the displacement is the hypotenuses. Therefore √(100+49)=√149.