SOLUTION: A 52 kg student traveling in a car with a constant velocity has a kinetic energy of 1.6* 10^4 J. What is the speedometer reading of the car in km/h?

Question 1205987: A 52 kg student traveling in a car with a constant velocity has a kinetic energy of 1.6* 10^4 J. What is the speedometer reading of the car in km/h?

Found 2 solutions by MathLover1, ikleyn:
Answer by MathLover1(20849)   (Show Source): You can put this solution on YOUR website!

given:

the kinetic energy is
where is the mass and is the velocity

since

Answer by ikleyn(52776)   (Show Source): You can put this solution on YOUR website!
.

Use the formula = E for kinetic energy E, known from any Physics textbook. Substitute given values for the mass m and for kinetic energy E and find v from equation = .

Happy calculations ( ! )

It is   2 x 2 = 4 level of complexity question / problem.

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