stone is thrown in a vertically upward direction with a velocity of 5 m s-¹. if the acceleration of the stone during its motion is 10 m s -² in the downward direction, what will be the height attained by the stone and how much will it take to reach there?
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Chemistry is the scientific study of the properties and behavior of matter. It is a natural science that covers the elements that make up matter to the compounds composed of atoms, molecules and ions:
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Answer
Initial velocity of a stone, u=5ms
−1
.
Final velocity of a stone v=0 (at rest)
If the acceleration of the stone during its motion is =−10ms
−2
.
Let the maximum height be ‘s’
v=u+at
0=5+(−10)t
t=
10
−5
=0.5s.
Time taken by stone =0.5s.
As per 3rd Law of motion,
v
2
=u
2
+2as
(0)
2
=(5)
2
+2(−10)s
∴s=
20
5
2
=
20
25
=1.25m.
Height attained by the store =1.25m.
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