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Q.

Is it true that a physical quantity measured is $- 6 m / s$ is its speed?

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a

True

b

False

answer is B.

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Detailed Solution

The above statement is false.
m/sec can be a measure of both velocity and speed, however, if we look closely, we can see that velocity is what it is since speed can never be negative because it is a scalar quantity.
Velocity can be zero, negative, or positive.
The correct statement would be, that a physical quantity measured is –6 m/s is its velocity.

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