Question

At what velocity of a body of mass 1 kg will have a kinetic energy of 1 joule

Answer 1

Answer:

answer is 1.414

Explanation:

we know that

K.E = 1/2 m v2

We'll replace K.E i.e kinectic enerygy by 1 J and mass (m) by 1 kg (given in the question)

1 = 1/2 * 1 * v^2

1 = 1/2 * 1 * v^22 = v^2 (take 2 to the other side)

1 = 1/2 * 1 * v^22 = v^2 (take 2 to the other side) v = √2 v = 1.414

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Answer 2

Answer:

answer is 1.414

Explanation:

we know that

K.E = 1/2 m v2

We'll replace K.E  by 1 J and mass (m) by 1 kg (given in the question)

1 = 1/2 * 1 * v^2

1 = 1/2 * 1 * v^22 = v^2

1 = 1/2 * 1 * v^22 = v^2

Explanation: