gitabudathoki432
gitabudathoki432 gitabudathoki432
  • 12-11-2021
  • Physics
contestada

a. How fast should a boy of 40kg mass run so that the kinetic energy becomes 800J?​

Respuesta :

Аноним Аноним
  • 12-11-2021

Answer:

[tex]k.e. = \frac{1}{2}mv {}^{2} \\ 800= \frac{1}{2} \times 40 \times v {}^{2} \\ 800 = 20v {}^{2} \\ v {}^{2} = 400 \\ v {}^{2} = 20ms {}^{ - 1} [/tex]

k.e. = kinetic energy

hope helpful <3

Answer Link

Otras preguntas

Which issue was addressed by the Supreme Court in the Dred Scott case? A. whether Northerners could own slaves B. whether slaves were citizens or property C. wh
1. Which verb or verb phrase best fits in the sentence below? I _______ the test when I remembered the correct answer. completes completing will complete had co
To what extent was the US Constitution a radical departure from the Articles of Confederation?
what ideas did Greek philosophers develop
What motivated people in the past to explore the world?
Timothy Leary, communes, and the haight-Ashbury district of san francisco were all part of A) detente B)the counterculture C)the silent majority D)realpolitik
Memorial Day weekend has been proclaimed as being the most dangerous holiday. Which incident has deemed it to become very unsafe? drowning accidents bicycle acc
What did Galileo think the bulges on either side of Saturn were cause by?
Factor completely. 15a² + 55a - 20 A. 5(3a² + 11a - 4) B. 5(a + 4)(3a - 1) C. (5a + 2)(3a - 10) D. (5a + 4)(3a - 5)
Rome contributed to the development of world languages.