Aball has a mass of 0.0935 kg just before it strikes the earth after being dropped from a building 39.8 m tall. what is its de broglie wavelength? the acceleration of gravity is 9.8 m/s 2 and planck’s constant is 6.62607 × 10−34 j · s. answer in units of m.

Explanation:

First of all, we need to find the final velocity of the ball just before it reaches the ground. Since the ball is in free-fall motion, its final velocity is given by

where

v is the final velocity

u = 0 is the initial velocity

g = 9.8 m/s^2 is the acceleration due to gravity

h = 39.8 m is the height of the building

Solving for v,

Now we can calculate the ball's momentum:

And now we can calculate the De Broglie's wavelength of the ball:

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