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

Evaluate the expression when x = 5: 10 I7-xI (A)-120 (B)20 (C)-20 (D)123

6x-3y=6 y=2x+5 USE SUBSTITUTION SHOW YOUR WORK

one of the cats in the neighborhood had six kittens all about the same size. If each of the new kittens weighed about5 1/2 ounces, how much would all the new ki

when you climb a rope you change? energy into? energy

chad buys peanuts in 2-pound bags. he packages them into bags that that 5/6 pound of peanuts. how many 2-pound bags of peanut should chad buy so that he can fil

If x can be any number, how many solutions are there for the equation? y = –x A. There is no solution. B. There is only one solution. C. There are many solu

one of the cats in the neighborhood had six kittens all about the same size. If each of the new kittens weighed about5 1/2 ounces, how much would all the new ki

increase 12 1/2 cm by 25 mm

Vicky came home from the matinee at 5:45 pm.The travel time to and from the cinema was 1/2 hr each way . She spent 2 1/4 hrs at the cinema . What time did she l

does our body has cells