The answer is 200 J
The kinetic energy (KE) is: KE = 1/2 m * v² m - mass of the object v - velocity of the object
We have: m = 4 kg v = 10 m/s
KE = 1/2 * 4 kg * 10² m/s KE = 200 J
The kinetic energy of a 4 kg rock rolling at a **speed **of 10 m/s is 200 Joules. ;
The kinetic energy (KE) of a 4 kg rock rolling at 10 m/s is calculated using the formula K E = 2 1 m v 2 . Substituting the values, we find that K E = 200 J . Thus, the rock possesses 200 joules of kinetic energy.
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