171060332
171060332 171060332
  • 02-04-2021
  • Physics
contestada

What is the mass of an object moving at a speed of 9.0 m/s with a kinetic energy of 200 J?

Group of answer choices

2.5 kg

4.9 kg

44 kg

1.2 kg

0.81 kg

Respuesta :

shaunahollland shaunahollland
  • 02-04-2021
Ek= 1/2mv²
200=1/2 m(9 ²)
200=1/2(81)m
200=40.5m
m=200/40.5
m=4.93kg

Answer: 4.9 kg (second option)
Answer Link

Otras preguntas

Solve for y. 5y = 135 What is the answer?
Most products assembled in maquiladoras are __
What was one way the Mesopotamians increased their slave population?
What are two of the ways that a forensic pathologist might use to help determine the time of death?
In at least 150 words, identify a theme in "Through the Tunnel" and explain how the setting of the story contributes to that theme.
There is no proportion between Twenty Pieces of Silver, and LIBERTY. This excerpt from The Selling of Joseph best states Sewall's view about _____.
Identify the cause and effect of the Homestead Strike
Root hairs function to
simplify each expression. justify each step. (5n • 9) • 2n
Select all of the concrete nouns. iron anger faith toolbox perseverance lamb grace tooth