A large sport utility vehicle has a mass of 2500 kg <?xml:namespace prefix = o n

Question

A large sport utility vehicle has a mass of 2500 kg<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />

Calculate the mass of CO2 emitted into the atmosphere upon accelerating the SUV from 0.0 mph to 65.0 mph . Assume that the required energy comes from the combustion of octane with 30% efficiency. (Hint: Use <?xml:namespace prefix = v ns = "urn:schemas-microsoft-com:vml" /> KE=1/2mv^2 to calculate the kinetic energy required for the acceleration.)

Express your answer using two significant figures.

m=

Explanation / Answer

First, convert mph to m/s by multiplying by .44704. You get 28.1635m/s.

Then you have the equation Work=.5*2500*(28.1635)^2-.5*2500*0^2=991

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