Question

# A food packet is dropped from a plane going at an altitude of 100 m. What is the path of the packet as seen from the plane?

A

A straight line in the south east direction

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B

A straight line moving in the south west direction

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C

Straight line perpendicular to the horizontal

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D

A parabolic path

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Solution

## The correct option is D Straight line perpendicular to the horizontal Solution: Let v1 be the velocity of the plane w.r.t to ground. ∴ vA = v1^i ∴ Then vB = v1^i − gt^j As the package has an initial velocity of v1^i and an acceleration of g downwards now velocity of B w.r.t A vBA = vB - vA = v1^i - gt^j - v1^i = −gt^j ∴ The package will look like it is falling vertically downward w.r.t. the plane.

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