Kinematics Question 223

Question: A particle is thrown vertically upwards. If it’s velocity at half of the maximum height it’s 10 m/s, then maximum height attained by is (Take g=10 m/s2) [CBSE PMT 2001, 2004]

Options:

A) 8 m

B) 10 m

C) 12 m

D) 16 m

Show Answer

Answer:

Correct Answer: B

Solution:

Let particle thrown with velocity u and it’s maximum height it’s H then H=u22g When particle is at a height H/2 , then it’s speed is 10m/s From equation v2=u22gh

(10)2=u22g(H2)=u22gu24g

u2=200 Maximum height

H=u22g=2002×10=10 m



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