khadeejahc6 khadeejahc6

27-05-2020
Physics

contestada

A rock falls 30 m. Its KE before it strikes the ground is 4,392 J. What is the
mass of the rock?
A. 15 kg
B. 146 kg
C. 1.5 kg
D. 3.0 kg

Relax

Respuesta :

sahadahlawani sahadahlawani

27-05-2020

Answer:

A,about 15kg.

Explanation:

PE=KE

mgh=1/2mv^2

m(9.81)(30)=4392

294.3m=4392

m=14.9235474

Answer Link

Otras preguntas

________ is a text document that contains all the commands a user could call on the command line to assemble an imagea) Docker CLIb) Docker Cloudc) Kitematicd)

Two cars of masses m₁ and m₂ are moving along the circular path of radius r₁ and r₂. They take one round in the same time. The ratio of angular velocities of th

Wellness does NOT include A) maintaining good sexual health B) reducing stress in positive ways C) focusing on others instead of yourself D) fostering your spir

What happens when chromyl chloride vapors are dissolved in NaOH and acetic acid, followed by the addition of lead acetate solution?

an unknown compound- CxHyOz - was analysed and found to have 6.80 g of carbon, 1.07 g of hydrogen, and 9.06 g of oxygen. What is the percent composition for eac

Younger individuals (younger than age 40) with nontoxic presentations do not require an esophagogram in cases of spontaneous pneumomediastinum. a) True b) False

Compare and contrast the atmospheres and weather systems of jupiter and neptune and tell how the differences effect each planet's appearance.

review some of the terms and concepts you've learned. D Narrative Structure Review- Question 2 of 4 Transitions help the reader A. keep the characters of the na

How did Jackson respond to the Supreme Court siding with the Cherokee after the Indian Removal Act of 1830? He defied the Supreme Court- ignoring Checks and Bal

What is the azimuth of a line described by the following two coordinates (given in meters)? N 762.876, E 250.241 and N 1073.482, E 516.856.