An aeroplane moving horizontally with a speed of $720 k m / h$ drops a food packet, while flying at a height of $396.9 m$ . The time taken by a food packet to reach the ground and its horizontal range is (Take $g = 9.8 m / {sec}^{2})$ .

3 s e c

and

2000 m

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5 s e c

and

500 m

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8 s e c

and

1500 m

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9 s e c

and

1800 m

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Solution

The correct option is D $9 s e c$ and $1800 m$
We know that
As the packet simply gets dropped, it's initial vertical velocity u = 0

Time taken for the packet to reach ground is

T =√(2H/g) = √(2396.9/9.8) = √81 = 9s

Horizontally the packet travels at the speed of aeroplane,

V = 720kmph = 720(5/18) = 200m/s

Range R = VT = 2009 = 1800m

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Similar questions

An airplane moving horizontally with a speed of 720 km/h drops a food pocket while flying at a height of 396.9 m. The time taken by a food pocket to reach the ground and its horizontal range is (Take g = 9.8 m/ $s e c^{2}$ )

An aeroplane moving horizontally with a speed of 720 km/h drops a food pocket, while flying at a height of 396.9 m.the time taken by a food pocket to reach the ground and its horizontal range is (Take g = 9.8 m/ $s e c^{2}$ )

Q. An aeroplane moving horizontally with a speed of 720 km/h drops a food packet, while flying at a height of 396.9 m. The time taken by a food packet to reach the ground and its horizontal range is

(T a k e g = 9.8 m / s e c^{2})

An aeroplane moving horizontally with a speed of 720 km/h drops a food pocket, while flying at a height of 396.9 m. the time taken by a food pocket to reach the ground and its horizontal range is (Take g = 9.8 m/ $s e c^{2}$ )

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An aeroplane moving horizontally with a speed of 720 km/h drops a food packet, while flying at a height of 396.9 m. The time taken by a food packet to reach the ground and its horizontal range is (Take g=9.8 m/sec2).

An aeroplane moving horizontally with a speed of $720 k m / h$ drops a food packet, while flying at a height of $396.9 m$ . The time taken by a food packet to reach the ground and its horizontal range is (Take $g = 9.8 m / {sec}^{2})$ .