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NEET UG PHYSICS MCQ: MOTION IN PLANE

1 Hard

1 of 1

Application +4 | -1

If

\vec A = 3\hat i + 4\hat j,\,\vec B = 7\hat i + 24\hat j

then the vector having the same magnitude as

\vec B

and parallel to

\vec A

is

View answer and explanation

Correct option: B

15\hat i + 20\hat j

Option B (

15\hat i + 20\hat j

) is correct because it has the same magnitude as

\vec B

and is parallel to

\vec A

.

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

are a and b respectively. The vector product of

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

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

, then the angle between

\overrightarrow Q \,and\,\overrightarrow R

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

A

B

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\overrightarrow{\mathrm{A}}

\overrightarrow{\mathrm{B}}

The wind appears to blow from the north to a man moving in the north-east direction. When he doubles his velocity the wind appears to move in the direction

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

east of north. The actual direction of the wind is