Un automóvil se mueve con velocidad constante por una carretera recta. Cada afirmación, indique si es verdadero o falso. Explique cada caso.
a) No se realiza trabajo alguno sobre el carro
b) La fuerza de rozamiento realiza trabajo
c) La fuerza normal no realiza trabajo
d) El automóvil solo tiene energía cinética
e) Una fuerza es conservativa si su energía mecánica es constante
Answers: 2
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