multiple choice question Ignoring friction effects, the amount of energy required to accelerate a car from rest to a speed $v$ is $E$. The energy gasoline. What additional amount of energy is required to accelerate the car to a speed $2v$?
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Step 1: The kinetic energy of an object is given by the formula: $KE = \frac{1}{2}mv^2$ where $m$ is the mass of the object and $v$ is its velocity. Show more…
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Ignoring friction effects, the amount of energy required to accelerate a car from rest to a speed v is E. The energy is delivered to the car by burning gasoline. How much additional amount of energy is required to accelerate the car to a speed 3v? Hint: Remember that the kinetic energy (E) is proportional to the speed (v), so if we double the speed (2v), the kinetic energy increases four times (4E). Therefore, the additional amount of energy is 3E (the difference). 4E 6E 9E 8E 12E
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What is the energy E required to accelerate a 1335 kg car from rest to 21 m/s? Compared to the amount of energy required to accelerate a car from rest to 21 m/s, how much energy is required to accelerate the car from 21 m/s to twice that speed, 42 m/s? the same four times as much three times as much twice as much
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