Aplant box falls from the windowsill 25.0 m above the sidewalk and hits the cement 3.0 s later. what is the box's velocity when it hits the ground?

Velocity of the box when it hits the ground=22.14 m/s

Explanation:

using kinematic equation

Vf²= Vi² + 2 g h

Vf= final velocity

Vi= initial velocity=0

g= 9.8 m/s²

h= height= 25 m

so Vf²= 0+ 2 (9.8) (25)

Vf=22.14 m/s

Thus the velocity of the box when it hits the ground=22.14 m/s

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