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a stone is thrown horizontally from an elevated point.After 0.5 seconds,the magnitude of its velocity is 1.5 times the magnitude of its initial velocity.Find the initial speed of stone.

a stone is thrown horizontally from  an elevated point.After 0.5 seconds,the magnitude of its velocity is 1.5 times the magnitude of its initial velocity.Find the initial speed of stone.

Grade:12

2 Answers

Abhinav
askIITians Faculty 387 Points
8 years ago
you can use the following equation

\vec{V} =\vec{U} + \vec{a}t

here V is 1.5 times U but opposite in direction.

hence, if we use value of g = 10 m/s2
than U = 2 m/s
divya
38 Points
8 years ago
For above question the answer is given 4.5 m/s.plz explain
 

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