Asked by Kevin
How much work must be done to stop a 970 kg car traveling at 115 km/h?
Answers
Answered by
drwls
Convert that velocity to meters per second. Then calculate (1/2)MV^2, the kinetic energy (KE). V must be in m/s and the mass M in kg, to get the KE in Joules.
The car must perform an equal amount of work if it is to lose that kinetic energy.
If you are stopping the car, the amount of work that must be performed is a negative number equal to the initial kinetic energy.
The car must perform an equal amount of work if it is to lose that kinetic energy.
If you are stopping the car, the amount of work that must be performed is a negative number equal to the initial kinetic energy.
Answered by
Anonymous
45
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