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

A 75.0 mL sample of water is heated to its boiling point. How much heat (in kJ ) is required to vaporize it?

Ishaan is confused between the terms webpage and website help him in understanding the difference between both

10POINTS Which answer best identifies the word(s) that the underlined phrase modifies? Against an enemy, —————————-however, it is used as a weapon of great p

Is –6 × 8 positive or negative?

2. After reading the story, did you feel that a situation like the one in "The Cold Equations" could actually happen? Explain your answer in three to five sente

HELP WILL MARK BRAINLIEST!! y = x2 – 2x + 3 y = 2x – 3

how to factorie 6x²+19x+15

The Grange and Farmers' Alliances were similar in that they A.worked to improve railroads' profits. B.focused on placing farmers in debt. C.sought to improve th

Name a ray with endpoint A in the figure

Read the excerpt from Gilgamesh: A New English Version. At four hundred miles they stopped to eat, at a thousand miles they pitched their camp. They had travele