evelyn49477 evelyn49477

03-02-2021
Physics

contestada

A 3kg book falls from a 2m tall bookshelf what is the speed

PICTURE included

A 3kg book falls from a 2m tall bookshelf what is the speed PICTURE included class=

Respuesta :

03-02-2021

Answer:

39.2m/s

Explanation:

The potential energy the book has right before it falls is equal to the kinetic energy in falling.

PE = KE

mgh = (1/2)mv

2gh=v

v=(2)(9.81)(2)

v=39.24m/s

Answer Link

Otras preguntas

PLEASE HELP aryans brought which of the following cultural elements to ancient Indian society? a A class system based on ritual purity b A grid method of city p

A paving stone in the shape of a regular hexagon is shown below. The area of the paving stone can be used to determine the number of stones needed to cover a pa

A ten B twelve six fourteen

The author uses dramatic irony, when the reader has information that at least some of the characters are unaware of, which affects the way the audience reacts t

ANSWERRRRR????HELPP PSLSSSSS

help! "I inventory my head and heart to weigh and measure what talents I might use to make my own tomorrow." What does inventory mean as it is used in this sent

Explain the basic beliefs of Confucius and how that relates to ancestors. Be sure to cite specific examples from your lesson. Plz Help me

Use the ALEKS calculator to write 47/21 as a decimal rounded to the nearest tenth.

4/5x+5=9 solve for x please i have 8 questions left!!!!!!!!!!!

Which elements are likely to have similar properties to calcium because they have the same number of valence electrons as calcium