brooklynzen52 brooklynzen52

08-02-2018
Physics

contestada

A 8.00 kg rock falls from a height of 20.0 meters. Determine the momentum of the rock right before it hits the ground. (4 points)

Respuesta :

shariquekhan25ow696t shariquekhan25ow696t

08-02-2018

by energy conservation you can obtain the velocity as the potential energy will be converted into the kinetic energy
1/2mv^2 = mgh
v^2 = 2gh
v^2 = 2*10*20
V = 20 m/s
thus momentum is equal to mv = 8*20 = 160 kgm/s

Answer Link

Otras preguntas

3 This question has two parts. First, answer Part A. Then, answer Part B. Part A Reread this sentence from the passage. We worked hard to make our farm profitab

The linear model represents the height, f(x), of a water balloon thrown off the roof of a building over time, x, measured in seconds.

23. What would be the location of the vertex (3, 4) if it were reflected across the y-axis? A. (3,-4) B. (-3, 4) C. (4, -3) D. (-4, 3)

Can the mixed number 7 and 13/100 be simplified?

what is the area of the figure bellow?

Choose the word that best completes each definition. A(n) is an emergency medical technician at a high level of training and expertise, often working from an

1. R 20 million of new investment has been added to the South African economy, the current MPS is 0.40, and tax rate (t) is 0.12. By how much will aggregate sp

reasons for the rise of the afrikaner nationalism from 1930 to 1948

Which of the following are true statements about a 30 69 90 triangle? Check all that apply

What is it called when a writer moves from one topic or idea to another topic or idea?