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Q.

A stone is thrown in a vertically upward direction with a velocity of 5 m/s. If the acceleration of the stone during its motion is -10 m/ in the downward direction, what will be the height attained by the stone?


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a

1m

b

2m

c

1.25 m

d

2.25 m 

answer is C.

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Detailed Solution

The height attained by the stone is 1.25 m.
Given: = 5 m/s, a = -10 m/, v = 0
Formula: 2aS = v²-,
Putting all the values we get,
2(-10)= 0-25
or, = 1.25 m
 
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