3-2.Motion in Plane
medium

किसी दिक्स्थान पर एक स्वेच्छ गति के लिए निम्नलिखित संबंधों में से कौन-सा सत्य है ?

$(a)$ $v _{\text {औसत }}=(1 / 2)\left( v \left(t_{1}\right)+ v \left(t_{2}\right)\right)$

$(b)$ $v _{\text {औमन }}=\left[ r \left(t_{2}\right)- r \left(t_{1}\right)\right] /\left(t_{2}-t_{1}\right)$

$(c)$ $v (t)= v (0)+ a t$

$(d)$ $r (t)= r (0)+ v (0) t+(1 / 2) a t^{2}$

$(e)$ $a _{\text {औमन }}=\left[ v \left(t_{2}\right)- v \left(t_{1}\right)\right] /\left(t_{2}-t_{1}\right)$

यहाँ ' औसत' का आशय समय अंतराल $t_{2}$ व $t_{1}$ से संबांधित भौतिक राशि के औसत मान से है ।

Option A
Option B
Option C
Option D

Solution

$(a)$ False: It is given that the motion of the particle is arbitrary. Therefore, the average velocity of the particle cannot be given by this equation.

$(b)$ True: The arbitrary motion of the particle can be represented by this equation.

$(c)$ False: The motion of the particle is arbitrary. The acceleration of the particle may also be non-uniform. Hence, this equation cannot represent the motion of the particle in space.

$(d)$ False: The motion of the particle is arbitrary; acceleration of the particle may also be non-uniform. Hence, this equation cannot represent the motion of particle in space.

$(e)$ True: The arbitrary motion of the particle can be represented by this equation.

Standard 11
Physics

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