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

England was able to expand its empire during the Industrial Revolution because?

Which personal pronoun correctly completes the sentence? __________ and Juan volunteered for the holiday food drive. A. He B. Him C. His

If you have a circle with a radius of 10 ft. how do you determine the area of a sector whose central angle measures 120?

What is the main reason why Free Soilers came to Kansas in the 1800s? A)to ensure the people of Kansas would be free to own slaves B)to ensure that Kansas voted

How many feet are longer than 20 centimeters

what fraction of 1 year is 5 weeks

Which noble helped rule England while the king was away leading the Third Crusade? A. Charlemagne B. Henry II C. Joan of Arc D. Eleanor of Aquitaine

what is one state that borders Canada in its proper place on the map

Lincoln-Douglas Debate –Stephen A. Douglas Source: An excerpt from Stephen A. Douglas’s argument in the first Lincoln-Douglas debate at Ottawa, Illinois, Augus

Explain why a piece of paper falls slowly to the ground despite the force of gravity on it.