Answer to Question #114751 in Mechanics | Relativity for Madison

Question

With fuel prices for combustible engine automobiles increasing, researchers and manufacturers have given more attention to the concept of an ultralight car. Using carbon composites, lighter steels and plastics, a fuel-efficient car can be manufactured at 540 kg. How much less does an ultralight car weigh compared to a 1450-kg Honda Accord ?

Answer 1

An ultralight car weighs less than Honda at $910kg$ or at $\frac{1450-540}{1450}100\%\approx63\%$