You took a Tesla Model S for a test drive. The car weighs 4,500 lb and can accelerate from 0 to 60 mph in 2.27 seconds. The car has a 581 kW battery pack. Determine the efficiency of the vehicle. [Ans. to check: 55.5%]

Patricia Bean
2022-07-15
Answered

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Jaylynn Huffman

Answered 2022-07-16
Author has **14** answers

Given, mass, $m=\frac{4500lb}{4500\times 0.4534}$

$m=2041.167kg$

${V}_{max}=60mph=60\times 0.44704\phantom{\rule{0ex}{0ex}}=26.8224m/s$

accelerator=$\frac{{V}_{max}-{V}_{min}}{t}=\frac{26.8224}{2.27}$

$a=11.816m/{s}^{2}$

$Power=F\times Varg=maVarg\phantom{\rule{0ex}{0ex}}=2041.167\times 11.816\times [\frac{26.8224+0}{2}]$

${P}_{oot}=323458.04klatts$

$Efficiency(n)=\frac{Poot}{Pin}=\frac{323.4}{581}=55.6$

$m=2041.167kg$

${V}_{max}=60mph=60\times 0.44704\phantom{\rule{0ex}{0ex}}=26.8224m/s$

accelerator=$\frac{{V}_{max}-{V}_{min}}{t}=\frac{26.8224}{2.27}$

$a=11.816m/{s}^{2}$

$Power=F\times Varg=maVarg\phantom{\rule{0ex}{0ex}}=2041.167\times 11.816\times [\frac{26.8224+0}{2}]$

${P}_{oot}=323458.04klatts$

$Efficiency(n)=\frac{Poot}{Pin}=\frac{323.4}{581}=55.6$

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