Question

person starts its journey from a corner of a square of side 'a'. He started his journey and reached at the same corner again. The distance and displacement covered respectively are

4a, zero

Zero, 4a

a, 4a

Zero, zero

​

Answer 1

Answer :

Side of square = a

Person starts its journey from a corner and returns to the same point$.$

We have to find

• Distance
• Displacement

★ Distance is defined as the actual length of path which is covered by moving object.

It is a scalar quantity having only magnitude.

SI unit : m

ATQ, person returns to the initial position.

∴ Therefore, distance travelled by person will be equal to perimeter of square.

⭆ Distance = 4(side)

⭆ Distance = 4a

★ Displacement is defined as the shortest distance between initial and final position of entire journey.

It is a vector quantity having both magnitude as well as direction.

SI unit : m

In this case, person returns to the initial position after some time.

∴ Change in position = 0

⭆ Displacement = 0

Cheers!