What wave occurs when you push a spring back and forth
1 answer:
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Answer:
The same magnitude and sign
Explanation:
The equation for kinetic energy is
Lets assume car's 1 velocity is positive while car's 2 velocity is negative (for example, the first one goes to the right and the second to the left). On both cases when we do the result will be always positive, and since the mass is positive, the kinetic energy is positive. Also, if both cars are identical, they have the same mass, and it is said also that their speed are the same (in magnitude), so this means that their kinetic energies, given by the formula already written, have the same magnitude and sign.