1.

A particle moves in a plane from `A` to `E` along the shown path. It is given that `Ab=BC=CD=DE=10` metre. Then the magnitude of net displacement of particle is : .A. `10 m`B. `15 m`C. `5 m`D. `20 m`

Answer» Correct Answer - A
Appying polygon law of addition,
`bar(AB) + bar(BC) + bar(CD) + bar(DE) = bar(AE)`
`|bar(AE)| = 10m`


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