A bullet 'A' is dropped from a certain height and at the same time another bullet 'B' is fired horizontally from the same height. Which one will hit the ground first and why?

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Solution

$B o t h t h e b u l l e t s h a v e i n i t i a l v e l o c i t y z e r o i n v e r t i c a l d i r e c t i o n a n d a c c e l e r a t i o n d u e t o g r a v i t y g i n v e r t i c l d i r e c t i o n . t h e r e f o r e d i s \tan c e t r a v e l l e d i n v e r t i c a l d i r e c t i o n : s = u_{y} t + \frac{1}{2} g t^{2} s = 0 + \frac{1}{2} g t^{2} t = \sqrt{\frac{2 s}{g}} T i m e t a k e n t o r e a c h t h e g r o u n d i s o n l y d e p e n d s o n t h e v e r t i c a l d i s \tan c e a n d g . T h e r e f o r e b o t h w i l l t a k e s a m e t i m e t o r e a c h t h e g r o u n d .$

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A bullet is dropped from the same height when another bullet is fired horizontally. They will hit the ground

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