NEET UG PHYSICS MCQ: MOTION IN PLANE

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A projectile is fired with a velocity v at an angle

\theta

with the horizontal. The speed of the projectile when its direction of motion makes an angle β with the horizontal is

View answer and explanation

Correct option: C

v\cos \mathrm{\theta }\sec \mathrm{\beta }

Option C (

v\cos \mathrm{\theta }\sec \mathrm{\beta }

) is correct because the horizontal component of velocity remains constant, allowing us to relate the initial and final speeds.

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\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)