An aeroplane is flying horizontally at a height of 490 m with a velocity of 150 ms-1. A bag containing food is to be dropped to the jawans on the ground. How far from them should the bag be dropped so that it directly reaches them ?

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1000 m

1500 m

750 m

2000 m

answer is B.

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Detailed Solution

t=2hg=2.4909.8=10s∴R=150×10=1500m

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