¿Cuál es la masa de un objeto cuya masa es de 400 J y energía cinética de 107J?

Mass, m = 125 kg

Explanation:

Let us assume that the question says, "What is the mass of an object whose velocity is 400 m/s and the kinetic energy of 10⁷ J.

The kinetic energy of an object is :

So, the mass of the object is 125 kg.

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i just did this and got a 100.

d. platinum would have the greatest temperature increase because it has the lowest specific heat.