सरल रेखा के अनुदिश गति कर रहे किसी कण की समय के साथ स्थिति समीकरण \( x=2 t+3 t^{2} \) के अनुसार ...

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सरल रेखा के अनुदिश गति कर रहे किसी कण की समय के साथ स्थिति समीकरण \( x=2 t+3 t^{2} \) के अनुसार बदलती है। जहाँ \( x \) मीटर में तथा \( t \) सेकण्ड में है। गणना कीजिए :
(a) कण का प्रारम्भिक वेग
(b) \( t=2 \) सेकण्ड पश्चात् कण का वेग
(c) कण का त्वरण।
यह भी बताइए कि कण एकसमान वेग से गतिशील है या एकसमान त्वरण से?
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