The mass of car 2 is twice the mass of car 1. If both cars have the same velocity, how does the kinetic energy of car
2 compare to car 1?

The kinetic energy of car 1 is half Kinetic energy of car 2

Explanation:

velocity of car 1 is V1 while that of car 2 is V2

From the question:

V1 = V2

If mass of car 1 is m, then mass of car 2 is 2m

E= 1/2mv^2

kinetic energy of car 2 = 1/2×2mv^2 = mv^2

kinetic energy of car 1 = 1/2mv^2

Therefore, Kinetic energy of car 1 is half kinetic energy of car 2

that tool is called an altimeter which measures your altitude which can be used to tell which atmosphere you are currently in, including the stratosphere.

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