# Word and Energy of Dropping a Book

Not what you're looking for? Search our solutions OR ask your own Custom question.

A student lifts a book of mass 1.12 kg to a height of 1.24 m; use g=9.8 m/s^2, write an equation then calculate:

a) How much work does the student do?

b) What is the potential energy of the book?

c) If the student drops the book vertically, what is the book's kinetic energy when it reaches the floor?

d) What is the speed of the book when it reaches the floor?

Â© BrainMass Inc. brainmass.com March 4, 2021, 6:15 pm ad1c9bdddfhttps://brainmass.com/physics/work/work-energy-dropping-book-36753

#### Solution Preview

(a) Work = Weight*Height = Mass*gravity*height = 1.12*9.8*1.24 = 13.61024 J

(b) ...

#### Solution Summary

The work and energy of dropping a book are provided. The speed of the book when it reaches the floor are determined.

$2.49