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The kinetic energy, k, of an object varies jointly with the mass of the object and the square of the velocity of the object. a 50-kg object moving at a velocity of 20 meters per second has 10,000 joules of kinetic energy. how many joules of kinetic energy does a 25-kg object moving at a velocity of 10 meters per second have? 250 joules 1,250 joules 2,500 joules 3,125 joules

Respuesta :

Answer:

KE = 1/2 M V^2 = 1/2 * 25 * 10^2 = 1250 J

Check

M2 = 1/2 M1

V2 = V1 / 2

E2 = 1/2 * 1/4 E1 = E1 / 8 = 10000 / 8 = 1250 J

Answer:

b

Explanation:

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