Respuesta :
The kinetic energy of the roller coaster is 2000Joules
Given the formula for expressing the velocity of the roller coaster is given as:
[tex]v = \sqrt{\frac{2k}{1000} }[/tex]
Given the following parameter:
v = 10m/s
Substitute the given parameter into the formula to have:
[tex]10 = \sqrt{\frac{2k}{1000} }[/tex]
Square both sides of the equation:
[tex](10)^2=(\frac{2k}{1000} )^2\\100=\frac{4k^2}{1,000,000} \\4k^2=100,000.000\\k^2=\frac{100,000,000}{4} \\k^2=4,000,000\\k=2000Joules[/tex]
Hence the kinetic energy of the roller coaster is 2000Joules
Learn more on subject of formula here: https://brainly.com/question/657646
Answer:
You need to use √2k/1000 formula.
2000 joule is the correct answer.