ryanzachmathew ryanzachmathew
  • 14-12-2021
  • Physics
contestada

A bullet of mass 20 g has its kinetic energy equal to 400 J. Find the speed of the bullet.

Respuesta :

Аноним Аноним
  • 14-12-2021

Answer:

  • m=20g=0.02kg
  • K.E=400J

[tex]\\ \sf\longmapsto KE=\dfrac{1}{2}mv^2[/tex]

[tex]\\ \sf\longmapsto \dfrac{1}{2}(0.02)v^2=400[/tex]

[tex]\\ \sf\longmapsto 0.01v^2=400[/tex]

[tex]\\ \sf\longmapsto v^2=40000[/tex]

[tex]\\ \sf\longmapsto v=200m/s[/tex]

Answer Link

Otras preguntas

Is this Linear y=4000-70x if it is how do you know
Which phrase best describes DNA? A. the structure that allows biochemical reactions to occur B. the structure that translates information into action C. the mol
Before scientists learned how to make artificial fertilizers, what key process limited the amount of nitrates available to plants in most ecosystems?
an example of a constant acceleration is
FACTORISE THESE REALLY STUCK 2X^2+5X+2 2W^2+5W-3 3A^2+14A+8 30Z^2-23z+2 8Y^2+23Y-3 6P^2-PWQ-Q^2
Is the bag or beaker more concentrated in starch ?
What is one result of a chemical change? A. Energy is created. B. A new material is formed. C. Materials change from one state to another. D. Elements are perma
Carrie and krystal are taking a road trip from Greenville to north valley.each person has her own map,and the scales on the maps are different. a. on carries ma
explain why the value of k cannot be equal to 0
The phrase "promote the general Welfare" in the Constitution refers to the idea that a. people are naturally selfish, and a government is necessary to keep orde