Question

from city a to b a bus covers 800km and an aeroplane covers 400km what is the displacement of the bus

Answer 1

ANSWER

Distance = (240 × 5) = 1200 km.

Speed = Distance/Time

Speed = 1200/(5/3) km/hr. [We can write 1

3

2

hours as 5/3 hours]

∴ Required speed = (1200×

5

3

) km/hr=720 km/hr

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Answer 2

Answer:

1. The displacement of the bus will be 800km
2. The displacement of the bus will be 800kmand displacement of aeroplane will be 400km.

Explanation:

• BECAUSE displacement occurs when it goes from one point to another. But if it goes to a point a and return again to point a it's displacement will be zero