ï»¿ A truck travelling due north at 20 m/s turns left and travels at same speed. Find the change in velocity. from Physics Motion in A Plane Class 11 Manipur Board

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Motion in A Plane

Physics Part I

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A truck travelling due north at 20 m/s turns left and travels at same speed. Find the change in velocity.

Consider, unit vector along north isÂ Â and that along west isÂ Â

Thus,

Velocity of truck travelling due north, Â

Velocity of truck west, Â

Â

Now the change in velocity of truck is,

Â  Â  Â  Â  Â

Â  Â  Â  Â  Â  Â  Â  Â Â

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What are the basic characteristics that a quantity must possess so that it may be a vector quantity?

A quantity must possess the direction and must follow the vector axioms. Any quantity that follows the vector axioms are classified as vectors.Â

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What is a scalar quantity?

A physical quantity that requires only magnitude for its complete specification is called a scalar quantity.
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