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

Recent t*ktok ursodizzy

is 27 a perfect square, a perfect cube, both, or neither?

What is the goal of meeting economic and human needs? The goal of meeting economic and human needs is improved of life.

Which statement best describes where the pi/4 comes from in the formula derivation?

Divide. If the divisor contains 2 or more terms, use long division. 3x3 + 9x? + 10x +8 x + 2 3x? + 9x? +10x+8 - = (Simplify your answer. Do not factor.) X +2

Find the value for β that makes cosβ = sin15 true. A) 45 B) 75 C) 105 D) 175 Plzz help!!

What is 2+2 please give me answer

An aquarium has a base area of 6 square feet and a height of 2 feet. Will the aquarium fit in 15 cubic feet of space? Explain why or why not. An aquarium has a

A full bottle holds 1/4 gallon of milk. If 5/7 of the milk has been poured out, how much milk is left in the bottle?

What is the value of the expression below when x equals 5? 14 + 15x A. 75 B. 89 C. 19 D. 34