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Question Number 42145 by Tawa1 last updated on 18/Aug/18

Commented by MrW3 last updated on 18/Aug/18

$i t m o v e s 2 m e t e r s i n 8 s e c o n d s . f o r$ $t h e f i r s t 6 m e t e r s i t n e e d s 24 s e c o n d s .$ $t h e n i t m o v e s 5 s t e p s a n d f a l l s i n t o t h e$ $p i t . i . e . i t f a l l s i n t o t h e p i t a f t e r 29 s .$
Commented by Tawa1 last updated on 18/Aug/18

$God bless you sir$
	Answered by Necxx last updated on 18/Aug/18

	$d i s t a n c e c o v e r e d i n 1 s t e p = 1 m$ $t i m e t a k e n = 1 s$ $t i m e t a k e n t o m o v e f i r s t 5 m f o r w a r d$ $= 5 s$ $t i m e t a k e n t o m o v e 3 m b a c k w a r d s$ $= 3 s$ $h e n c e, t h e n e t d i s t a n c e t r a v e l l e d = 5 - 3$ $= 2 m$ $n e t t i m e t a k e n t o c o v e r t h i s 2 m = 8 s$ $i f t h e d r u n k a r d c o v e r s 2 m i n 8 s, t h e n$ $d i s t a n c e c o v e r e d i n 8 m = \frac{8 \times 8}{2} = 32 s$ $s i n c e t h e r e i s s t i l l a r e m a i n d e r o f$ $5 m w h i c h c a n b e c o v e r e d i n 5 s$ $t h e n t h e t o t a l t i m e t a k e n f o r t h e$ $d r u n k a r d t o e n t e r a p i t 13 m a w a y$ $= 32 + 5 = 37 s$
	Commented by MrW3 last updated on 19/Aug/18

	$t h e p i t i s 11 m a w a y, n o t 13 m!$
	Commented by Necxx last updated on 20/Aug/18

	$o h . . . . I d i d n t t a k e n o t e o f t h a t . T h a n k s$
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