NEET UG PHYSICS MCQ: MOTION IN PLANE

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Two bodies are projected from roof with same speed in different directions. If air resistance is not taken into account then

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Correct option: D

Both (a) and (c) are correct

Option D (Both (a) and (c) are correct) is correct because, without air resistance, they reach the ground with the same speed and, if they have the same mass, the same magnitude of momentum.

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Acceleration due to gravity: The magnitudes of the two vectors

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

are a and b respectively. The vector product of

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

cannot be If

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

, then the angle between

\overrightarrow Q \,and\,\overrightarrow R

is What happens, when we multiply a vector by -2 ? Which of the following is not true? If

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

and

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

where

A

and

B

are the magnitudes of

\overrightarrow{\mathrm{A}}

and

\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