SATHEE: Kinematics Question 197

Kinematics Question 197

Question: A particle is dropped under gravity from rest from a height $h (g = 9.8 m / \sec^{2})$ and it travels a distance $9 h / 25$ in the last second, the height $h$ it’s [MNR 1987]

Options:

A) 100 m

B) 122.5 m

C) 145 m

D) 167.5 m

Show Answer

Answer:

Correct Answer: B

Solution:

Let h distance is covered in n sec
$\Rightarrow h = \frac{1}{2} g n^{2}$ -(i) distance covered in $n^{t h}$ sec $= \frac{1}{2} g (2 n - 1)$
$\Rightarrow \frac{9 h}{25} = \frac{g}{2} (2 n - 1)$ -(ii) From (i) and (ii), $h = 122.5 m$

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Kinematics Question 197

Question: A particle is dropped under gravity from rest from a height $h (g = 9.8 m / \sec^{2})$ and it travels a distance $9 h / 25$ in the last second, the height $h$ it’s [MNR 1987]

Options:

Answer:

Solution:

इंजीनियरिंग की तैयारी

चिकित्सा तैयारी

एनसीईआरटी पुस्तकें और समाधान

महत्वपूर्ण संसाधन

अन्य संसाधन

पाठ्यक्रम

परीक्षा मंच

नमूना मॉक टेस्ट

सदस्यता

एनसीईआरटी व्यायाम वीडियो समाधान

Kinematics Question 197

Question: A particle is dropped under gravity from rest from a height h(g=9.8m/sec2) and it travels a distance 9h/25 in the last second, the height h it’s [MNR 1987]

Options:

Answer:

Solution:

इंजीनियरिंग की तैयारी

चिकित्सा तैयारी

एनसीईआरटी पुस्तकें और समाधान

महत्वपूर्ण संसाधन

अन्य संसाधन

पाठ्यक्रम

परीक्षा मंच

नमूना मॉक टेस्ट

सदस्यता

एनसीईआरटी व्यायाम वीडियो समाधान

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Question: A particle is dropped under gravity from rest from a height $h (g = 9.8 m / \sec^{2})$ and it travels a distance $9 h / 25$ in the last second, the height $h$ it’s [MNR 1987]