An object has 100J of KE. It has a mass of 10kg. How fast is it travelling

asked Dec 22, 2019 31.1k views

5 votes

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5 votes

$k = (1)/(2) mv {}^(2)$

$100 = (1)/(2) * 10 * v {}^(2)$

$100 = 5v {}^(2)$

$v {}^(2) = 20$

v = √(20) = 2 √(5)

Holms answered Dec 27, 2019