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almond37 [142]
3 years ago
8

How fast is a ball rolling if it contains 98 j of kinetic energy and has a mass of 4kg

Physics
1 answer:
zysi [14]3 years ago
4 0

Answer:

the ball is rolling 7m/s

Explanation:

Formula for kinetic energy: 1/2mv²

K = 1/2mv²

98 = 1/2(4)v²

98 = 2v²

49 = v²

√49 = v

7 = v

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