Question

the kinetic energy of a body of mass 500g is 1250j. find its speed







please answer correctly



this is 9th class question



please follow i)aftab1461
ii)aftab67​

Answer 1

$\huge\star{\mathfrak{\underline{\underline{\red{Answer}}}}}$

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KE=1/2 mv²

$\implies$1250=1/2 x 0.5 x v²

$\implies$1250 x 4 =v²

$\implies$v=√5000

$\implies$v≈70m/s

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Answer 2

Answer:

-> KE=1/2 mv²

-> 1250=1/2 x 0.5 x v²

-> 1250 x 4 =v²

-> v = √5000

-> v ≈ 70m/s