NEET UG PHYSICS MCQ: MOTION IN PLANE

1 Easy

1 of 1

Application +4 | -1

A particle has initial velocity

\left( {3i + 4j} \right)

and has acceleration

\left( {0.4i + 0.3j} \right)

its speed after 10 s is

View answer and explanation

Correct option: C

7\sqrt 2

units

Option C (

7\sqrt 2

units) is correct because it is the magnitude of the final velocity vector after 10 seconds, calculated using vector addition.

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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)