Deepak ☑️ Jhumri teliya, India 46 Questions 120 Answers 1 Best Answer 1,075 Points View Profile 4 Deepak ☑️Guru Asked: November 2, 20212021-11-02T04:52:00+05:30 2021-11-02T04:52:00+05:30In: Science A stone is thrown vertically upwards with an initial velocity of 48 m/s . Find : 4 (i) the maximum height to weight it rises , (ii) the total time it takes to return to a earth . gravitationphysics Share Facebook 1 Answer Voted Oldest Recent Dhiraj Telaiya, India 67 Questions 151 Answers 31 Best Answers 18 Points View Profile Best Answer Dhiraj 2021-11-02T05:56:33+05:30Added an answer on November 2, 2021 at 5:56 am (i) If h is the maximum height reached by the ball , then taking g as negative we 2 (-g)h = v² – u² or, -2 gh = v² – u² or, h = (v²-u²)/-2g or, h = (0)²-(48)²/2 x (-9.8) or, h = -48 x 48/-9.8 x 2 or, h = 117.15 m (ii) v = u + at v = u + at or, v = u + (-a)t or, v = u – at or, t = u – v/a or, t = 48 – 0/9.8 or, t = 4.9 sec The time of ascent is equal to the time of descent total time taken by stone from throw to return = 4.9 + 4.9 = 9.8 sec 1 Share Share Share on Facebook Share on Twitter Share on LinkedIn Share on WhatsApp You must login to add an answer. Username or email* Password* Remember Me! Forgot Password?