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Standard XII

Physics

Applying NLM along 3 Axis

An aeroplane ...

Question

An aeroplane is moving with horizontal velocity u at height h. The velocity of a packet dropped from it on the earth's surface will be (g is acceleration due to gravity)

\sqrt{u^{2} + h^{2}}

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\sqrt{u^{2} + 2 g h}

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\sqrt{u^{2} - h^{2}}

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Solution

The correct option is B $\sqrt{u^{2} + 2 g h}$
The vertical component of velocity $v = \sqrt{2 g h}$
Horizontal velocity of dropped packet $= u$
Resultant velocity $= \sqrt{u^{2} + 2 g h}$

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An aeroplane is moving with horizontal velocity u at height h. The velocity of a packet dropped from it on the earth's surface will be (g is acceleration due to gravity)

The correct option is B √u2+2ghThe vertical component of velocity v=√2gh Horizontal velocity of dropped packet =uResultant velocity =√u2+2gh

The correct option is B $\sqrt{u^{2} + 2 g h}$
The vertical component of velocity $v = \sqrt{2 g h}$
Horizontal velocity of dropped packet $= u$
Resultant velocity $= \sqrt{u^{2} + 2 g h}$