4. a plane traveling at 200 m/s drops supplies from 1500 m above the ground. if it reaches
the ground after falling for 17.5 seconds, what is its horizontal displacement?

3500 m

Explanation:

To find the horizontal displacement of the box of supplies, we just need to analyze its horizontal motion.

The horizontal motion of the box is a uniform motion with constant velocity, since there are no forces acting along this direction. Therefore, the horizontal displacement is given by

where

is the horizontal velocity

t is the time

The horizontal velocity of the supplies is the same as the plane, therefore

So, since the time of flight is

t = 17.5 s

The horizontal displacement is

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explanation: