contestada

A pile driver drops from a height of 35 meters
before landing on a piling. What is the
speed of the driver when it hit the piling?

Respuesta :


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Answer:

26.19 m/s

Explanation:

The gravitational potential energy of the driver would convert to the kinetic energy at the bottom.

[tex]mg h = 0.5 mv^2[/tex]

Where, m is the mass, v is the speed, h is the height and g is the acceleration due to gravity.

Given,

h = 35 m

[tex]v = \sqrt {2gh}= \sqrt {2\times 9.8\times 35} =26.19 m/s[/tex]

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