A truck, a car and a motor cycle have equal kinetic energies. If equal stopping
x > y > z
x < y < z
x = y = z
x 4y 8z
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Assertion (A): Transformer is useful for stepping up or stepping down voltages.Reason (R): Transformer is a device used in D.C. circuits. In the context of the above two statements, which one of the following is correct?