Question

1. A boy goes to a shop, which is 3 km away, buys things and comes back. What is the distance and displacement in km and m? ​


with full explanation
this is numerical question​

Answer 1

Answer:

• Displacement = 0 Km and 0 metres
• Distance covered = 6 Km and 6000 meters.

Explanation:

According to the Question

It is given that boy goes to a shop, which is 3 km away, buys things and comes back.

As we know that displacement is defined as the shortest path .

Displacement is a vector quantity .

It may be Positive, Negative and zero.

Since , boy goes to shop and come back where he was initially present . So , displacement will be zero.

Calculating Displacement

↠ Displacement = 3 km + (-3 km ) back to initial position

↠ Displacement = 3 - 3

↠ Displacement = 0 Km

• Hence, displacement of the boy will be 0 Km and 0 metres respectively.

Now, Calculating the Total Distance covered by boy.

↠ Distance covered by boy = 3 Km + 3Km

↠ Distance Covered by Boy = 6 km

Converting into Metres

→ Distance Covered = 6×1000m = 6000m

• Hence, the distance covered by the boy will be 6 Km and 6000 metres .

Answer 2

Explanation:

given :

• A boy goes to a shop, which is 3 km away, buys things and comes back. What is the distance and displacement in km and m?

to find:

• distance and displacement in km and m?

solution :

• intial point = 3km (-3)

• intial point = 3-3

• intial point = 0

• then, we calculate the intial point distance

• intial point distance = 3 +3

• intial point distance = 6

• intial distance = 6× 1000

• = 6000 m

• intial distance = 6000 m