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6.3 Quiz (B)
This test/quiz is accepting submissions until Friday, January 29, 2021 at 3:00 pm
Questions 1
Question 1 (1 point)
A roller coaster with a mass of 700 kg has 9000 J of kinetic energy. How fast is going (what is its velocity)?
a
12.85 m/s
b
6.4 m/s
С
5.1 m/s

You plug 9000J into KE and divide 700 in half to plug in for 1/2m. That gives us 9000=350*v2. You divide on both sides by 350, leaving us with 25 with a remainder=v2. The square root of 25 is 5. 5.1.

my exact test question and unit haha

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+ 6.3 Quiz (B) This test/quiz is accepting submissions until Friday, January 29, 2021 at 3:00 pm Questions 1 Question 1 (1 point) A roller coaster with a mass of 700 kg has 9000 J of kinetic energy. How fast is going (what is its velocity)? a 12.85 m/s b 6.4 m/s С 5.1 m/s

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+
6.3 Quiz (B)
This test/quiz is accepting submissions until Friday, January 29, 2021 at 3:00 pm
Questions 1
Question 1 (1 point)
A roller coaster with a mass of 700 kg has 9000 J of kinetic energy. How fast is going (what is its velocity)?
a
12.85 m/s
b
6.4 m/s
С
5.1 m/s