A car accelerates from rest of u m s -1 . The energy spent in this process is E J. The energy required to accelerate the car from u m s -1 to 2u m s -1 is nE J. The value of n is_____.
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(3)
The kinetic energy of a moving particle is given by
…
When the final velocity of the particle becomes twice the initial velocity, the kinetic energy of the particle can be written as
...
Divide equation by equation and solve to calculate the value of n.
n = 3
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