First slide

Release from certain height

Question

An aeroplane moving horizontally with a speed of 180 Km/hr drops a food packet while flying at a height of 500 m. the horizontal range is

Easy

A

180 m
B

980 m
C

500 m
D

670 m

Solution

$\begin{array}{l} S = ut + \frac{1}{2} {gt}^{2} \\ \Rightarrow 500 = \frac{1}{2} . 10 . t^{2} \Rightarrow t = 10 \sec \\ \Rightarrow x = \frac{180 \times 5}{18} \times 10 = 500 m \end{array}$

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