SATHEE: Laws Of Motion Question 67

Laws Of Motion Question 67

Question: Consider the following statement: When jumping from some height, you should bend your knees as you come to rest, instead of keeping your legs stiff. Which of the following relations can be useful in explaining the statement [AMU (Engg.) 2001]

Options:

A) $Δ \vec{P_{1}} = - Δ \vec{P_{2}}$

B) $Δ E = - Δ (P E + K E) = 0$

C) $\vec{F} Δ t = m Δ \vec{v}$

D) $Δ \vec{x} \propto Δ \vec{F}$ Where symbols have their usual meaning

Show Answer

Answer:

Correct Answer: C

Solution:

$\vec{F} Δ t = m Δ \vec{v}$ therefore $F = \frac{m Δ \vec{v}}{t}$ By doing so time of change in momentum increases and impulsive force on knees decreases.

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Laws Of Motion Question 67

Question: Consider the following statement: When jumping from some height, you should bend your knees as you come to rest, instead of keeping your legs stiff. Which of the following relations can be useful in explaining the statement [AMU (Engg.) 2001]

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

Laws Of Motion Question 67

Question: Consider the following statement: When jumping from some height, you should bend your knees as you come to rest, instead of keeping your legs stiff. Which of the following relations can be useful in explaining the statement [AMU (Engg.) 2001]

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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