a person is throwing balls into the air one after other . he throws the second ball when first ball is at the heighest point . if he is throwing two balls every second ,how high do they rise

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$W h e n p e r s o n t h r o w s t w o b a l l s i n e v e r y s e c o n d t h e n f i r s t b a l l r e a c h e s t o t h e h i g h e s t p o i n t i n 1 s . a t t h e h i g h e s t p o i n t v e l o c i t y i s z e r o (v = 0) . v = u + a t a c c e l e r a t i o n = - g t = 1 s 0 = u - g u = g w h e r e u i s t h e i n i t i a l v e l o c i t y . D i s t n a c e t r a v e l l e d i n o n e s e c o n d i s t h e m a x i m u m h e i g h t c o v e r e d b y t h e b a l l . s = u t + \frac{1}{2} a t^{2} s = g (1) - \frac{g}{2} \times 1 \times 1 s = \frac{g}{2} s = 9.8 / 2 s = 4.9 m$

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