A particle moves in east direction with 15 ,m/sec . for 2, sec then moves northward with 5, m/sec .

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3-2.Motion in Plane

medium

A particle moves in east direction with $15 \,m/sec$. for $2\, sec$ then moves northward with $5\, m/sec$. for $8 \,sec$. then average velocity of the particle is

A$5\, m/sec\,$ due $E -37^o -N$

B$5\, m/sec\,$ due $N -37^o -E$

C$7\, m/sec\,$ due $S -37^o -W$

D$10\, m/sec\,$ due $N -37^o -E$

Solution

$\begin{aligned} \overrightarrow{v}_{av} &=\frac{\text { total displacement }}{\text { total time }} \\ &=\frac{(15 \hat{\mathrm{i}}) \times 2+(5 \hat{\mathrm{j}}) \times 8}{2+8} \\ &=3 \hat{\mathrm{i}}+4 \hat{\mathrm{j}} \\ &=5 \mathrm{m} / \mathrm{s} \mathrm{N}-37^{\circ}-\mathrm{E} \end{aligned}$

Standard 11

Physics

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easy

(AIIMS-2009)

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hard

(JEE MAIN-2024)

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medium

A particle moves in east direction with $15 \,m/sec$. for $2\, sec$ then moves northward with $5\, m/sec$. for $8 \,sec$. then average velocity of the particle is

Solution

Similar Questions

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