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A runaway train car that has a mass of 13500 kg travels at a speed of 5.5 m/s down a track. What is its kinetic energy?

A) 207,337.5 J
B) 200,937.5 J
C) 185,937.5 J
D) 198,937.5 J

Answer :

Final answer:

The kinetic energy (KE) of the runaway train car with a mass of 13,500 kg traveling at a speed of 5.5 m/s down a track is b- 1,507,812.5 J (joules).

Explanation:

To calculate the kinetic energy of an object, you can use the formula: KE = ½mv², where m is the mass in kilograms and v is the velocity in meters per second.
KE = ½ × 13,500 kg × (5.5 m/s)²
KE = ½ × 13,500 kg × 30.25 m²/s²
KE = 1,507,812.5 J (joules)
Kinetic energy is a fundamental concept in physics that relates to the motion of an object. It signifies the energy an object possesses because of its speed or velocity.

This energy depends on both the mass (m) and the square of the velocity (v) of the object.
The kinetic energy (KE) of the runaway train car with a mass of 13,500 kg traveling at a speed of 5.5 m/s down a track is 1,507,812.5 J (joules).
In simple terms, if you have two objects with the same mass, the one moving faster will have more kinetic energy.

Conversely, if two objects are moving at the same speed, the one with greater mass will have more kinetic energy.

Learn more about Kinetic Energy here:

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