Respuesta :

catlovingenius
KE = 1/2mv^2

1/2 of the mass in this equation is 2 bc 4 divides by 2 = 2.

The velocity squared in this equation is 100 because 10 * 10 = 100

2 * 100 = 200

The kinetic energy of the rock is 200 joules.

Hope this helps.

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