What is the work to be done to increase velocity from 18km/h to 19km/h if the mass of the car is 2000kg?
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ANSWER:-
The increase in kinetic energy can be found by subtracting the initial kinetic energy from the final kinetic energy
ΔK=12mv2−12mu2
=> 12m(v2−u2)
= 12(2000)(5.2782−52)
= 5714.5682
= 2854.28J.
Hence the work done in increasing the velocity of a car of mass 2000 kg from 18 km/h to 19 km/h is 2854.28J.
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Answer:37 × 10^3
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