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OpenStudy (bhavya):
find the speed of a stone which possesses kinetic energy of 20 joules and mass of 100 grams
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OpenStudy (anonymous):
E = (1/2)mv², u know how to use this equation right?
OpenStudy (anonymous):
20 j = (1/2)(0.1kg)(v²) v=sqrt( 2(20 j) / (0.1kg) ) =srrt(400)m/s = 20m/s
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