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Motion in A Straight Line question

2005 · Q153
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Motion in A Straight Line question

2005 · Q153

NEETPhysicsMotion in A Straight LineMCQ+4 / −1
A ball is thrown vertically upward. It has a speed of 10 m/sec when it has reached one half of its maximum height. How high does the ball rise?
(Take g = 10 m/s2.)
  1. A
    10 m
  2. B
    5 m
  3. C
    15 m
  4. D
    20 m
View written solutionFree

Correct answer: A

At height h2{h \over 2}2h​, speed is = 10 m/s

and at height h, speed = 0

Using formula,

v2 = u2 - 2gh

0 = (10)2 - 2(10)h2{h \over 2}2h​

⇒\Rightarrow⇒ h = 10010{{100} \over {10}}10100​ = 10 m

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