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प्रश्न
A particle moves along the X-axis as x = u (t − 2 s) + a (t − 2 s)2.
(a) the initial velocity of the particle is u
(b) the acceleration of the particle is a
(c) the acceleration of the particle is 2a
(d) at t = 2 s particle is at the origin.
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उत्तर
(c) the acceleration of the particle is 2a
(d) at t = 2 s, the particle is at the origin
Initial velocity = \[\left| \frac{d x}{d t} \right|_{t = 0}\]
x = u(2 s − 2 s) + a (2 s − 2 s)2 = 0 (origin)
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