Question

# An aeroplane moving horizontally with a speed of $$180 km/hr$$ drops a food packet while flying at a height of $$490m$$. The horizontal range of the packet is:

A
180m
B
980m
C
500m
D
670m

Solution

## The correct options are A $$180 m$$ B $$670 m$$ C $$500 m$$ Time taken by packet to arrive on the ground t $$h=0\times t+\dfrac { 1 }{ 2 } g{ t }^{ 2 }\\ t=\sqrt { \dfrac { 2h }{ g } } \\ =\sqrt { \dfrac { 2\times 490 }{ 9.8 } } =\sqrt { 100 } =10\ sec.$$ Distance traveled by the packet in horizontal direction during the same time D$$D= u\times t = 180 \times \dfrac {5}{18} \times 10 = 500\ m$$ Physics

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