NEET UG PHYSICS MCQ: MOTION IN PLANE

1 Hard

1 of 1

Understanding +4 | -1

\hat{\mathbf{A}}

is a unit vector in a given direction, then the value of

\hat{\mathbf{A}} \cdot \frac{d \hat{\mathbf{A}}}{d t}

View answer and explanation

Correct option: A

Option A is correct because the dot product of a unit vector with its derivative with respect to time is always zero.

More Questions from MOTION IN PLANE

Practice All Chapter MCQs →

\mathrm{\vec a}\,and\,\mathrm{\vec b}

\mathrm{\vec a}\,and\,\mathrm{\vec b}

\overrightarrow P \,\,.\,\,\overrightarrow Q = 0\,and\,\overrightarrow P \,\, \times \,\,\overrightarrow Q = 0

\overrightarrow Q \,and\,\overrightarrow R

\vec{A}=3 \hat{i}+4 \hat{j}

\vec{B}=6 \hat{i}+8 \hat{j}

A

B

\overrightarrow{\mathrm{A}}

\overrightarrow{\mathrm{B}}

{\cot ^{ - 1}}\left( 2 \right)