An object undergoes constant acceleration after starting from rest and then travels 5m in the first second.Determine how far it will go in the next second. a)15m b)10m c)20m d)5m


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Question Number 29463 by NECx last updated on 09/Feb/18

$A n o b j e c t u n d e r g o e s c o n s t a n t$ $a c c e l e r a t i o n a f t e r s t a r t i n g f r o m$ $r e s t a n d t h e n t r a v e l s 5 m i n t h e$ $f i r s t s e c o n d . D e t e r m i n e h o w f a r$ $i t w i l l g o i n t h e n e x t s e c o n d .$ $a) 1 5 m b) 10 m c) 20 m d) 5 m$
	Answered by mrW2 last updated on 09/Feb/18

	$s = \frac{1}{2} {a t}^{2}$ $s_{1} = \frac{1}{2} a \times 1^{2} = 5 m$ $\Rightarrow a = 10$ $s_{2} = \frac{1}{2} \times 10 \times 2^{2} = 20 m$ $Δ s_{2 - 1} = 20 - 5 = 15 m$ $\Rightarrow a n s w e r a) i s c o r r e c t .$
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