If $\overrightarrow A $ is $(3,\, 4)$ unit, then show that the value of its unit vector is $1$.
If $\overrightarrow A $ is $(3,\, 4)$ unit, then show that the value of its unit vector is $1$.
$1$
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Define scalar and vector physical quantities with their examples.
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How can we represent vector quantity ?
How can we represent vector quantity ?
Read each statement below carefully and state with reasons, if it is true or false :
$(a)$ The magnitude of a vector is always a scalar,
$(b)$ each component of a vector is always a scalar,
$(c)$ the total path length is always equal to the magnitude of the displacement vector of a particle.
$(d)$ the average speed of a particle (defined as total path length divided by the time taken to cover the path) is either greater or equal to the magnitude of average velocity of the particle over the same interval of time,
$(e)$ Three vectors not lying in a plane can never add up to give a null vector.
Read each statement below carefully and state with reasons, if it is true or false :
$(a)$ The magnitude of a vector is always a scalar,
$(b)$ each component of a vector is always a scalar,
$(c)$ the total path length is always equal to the magnitude of the displacement vector of a particle.
$(d)$ the average speed of a particle (defined as total path length divided by the time taken to cover the path) is either greater or equal to the magnitude of average velocity of the particle over the same interval of time,
$(e)$ Three vectors not lying in a plane can never add up to give a null vector.
The change in a vector may occur due to .....
The change in a vector may occur due to .....
The value of a unit vector in the direction of vector $A = 5\hat i - 12\hat j,$ is
The value of a unit vector in the direction of vector $A = 5\hat i - 12\hat j,$ is