A .5kg book sits on top of a student's desk which is 9m high. How much gravitational potential energy does the book have as it sits on the desk?

441J

Explanation:

Given parameters:

Mass of book  = 5kg

Height  = 9m

Unknown:

Gravitational potential energy  = ?

Solution:

The gravitational potential energy of a body is the energy due to the position of the body.

 It is given as:

   Gravitational potential energy = mass x acceleration due to gravity x height

Gravitational potential energy  = 5 x 9.8 x 9  = 441J

f=ma a/f/m a= 480/60 a = 8m/s/s that is quick wow

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