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A boy walks uniformly along the sides of...

A boy walks uniformly along the sides of a rectangular park of size `400mxx300m`, starting from one corner to the other corner diagonally opposite. Which of the following statements is incorrect?

A

he has travelled a distance is 700m

B

his displacement is 700m

C

his displacement is 500m

D

his velocity is not uniform throughout the walk

Text Solution

Verified by Experts

The correct Answer is:
B

Displacement `vec(AC)=ver(AB)+vec(BC)`
`AC=sqrt((AB)^(2)+(BC)^(2))=sqrt((400)^(2)+(300)^(2))=500`m
Distance `=AB+BC=400+300=700m`
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