Class 9 Exam > Class 9 Questions > An example of Kinetic energy would be:a)a mov...
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An example of Kinetic energy would be:
- a)a moving car
- b)a charge particle in an electric field.
- c)a stretched rubber band just released.
- d)all of the above.
Correct answer is option 'D'. Can you explain this answer?
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Verified Answer
An example of Kinetic energy would be:a)a moving car b)a charge partic...
All of the examples given in the question are examples of kinetic energy. Kinetic energy is the energy of motion, so any object or particle that is moving has kinetic energy.
For example, a moving car has kinetic energy because it is moving. A charge particle in an electric field also has kinetic energy because it is moving due to the electric force acting on it. A stretched rubber band that has just been released also has kinetic energy as it moves due to its elastic potential energy being converted into kinetic energy. Therefore, all of the examples given in the question are correct.
Most Upvoted Answer
An example of Kinetic energy would be:a)a moving car b)a charge partic...
Kinetic energy is the energy possessed by an object due to its motion. It is one of the two main types of energy, along with potential energy. Kinetic energy depends on both the mass and the velocity of the object. The formula for calculating kinetic energy is KE = 1/2 mv^2, where KE is the kinetic energy, m is the mass of the object, and v is its velocity.
Explanation of options:
Moving car: A moving car possesses kinetic energy due to its motion. The car has both mass and velocity, and therefore, it has kinetic energy. The faster the car moves, the greater its kinetic energy will be.
Charge particle in an electric field: A charged particle moving in an electric field also possesses kinetic energy. The particle has both mass and velocity, and when it moves in response to the electric field, it gains kinetic energy.
Stretched rubber band just released: When a rubber band is stretched and then released, it undergoes motion and possesses kinetic energy. As the rubber band returns to its original shape, it moves and gains kinetic energy. The velocity of the rubber band will depend on various factors such as the tension in the band and the distance it was stretched.
Conclusion:
All three options, a moving car, a charged particle in an electric field, and a stretched rubber band just released, demonstrate examples of objects possessing kinetic energy. In each case, the objects are in motion and have both mass and velocity. The kinetic energy of these objects is determined by their mass and the square of their velocity. Therefore, the correct answer is option 'D', all of the above.
Explanation of options:
Moving car: A moving car possesses kinetic energy due to its motion. The car has both mass and velocity, and therefore, it has kinetic energy. The faster the car moves, the greater its kinetic energy will be.
Charge particle in an electric field: A charged particle moving in an electric field also possesses kinetic energy. The particle has both mass and velocity, and when it moves in response to the electric field, it gains kinetic energy.
Stretched rubber band just released: When a rubber band is stretched and then released, it undergoes motion and possesses kinetic energy. As the rubber band returns to its original shape, it moves and gains kinetic energy. The velocity of the rubber band will depend on various factors such as the tension in the band and the distance it was stretched.
Conclusion:
All three options, a moving car, a charged particle in an electric field, and a stretched rubber band just released, demonstrate examples of objects possessing kinetic energy. In each case, the objects are in motion and have both mass and velocity. The kinetic energy of these objects is determined by their mass and the square of their velocity. Therefore, the correct answer is option 'D', all of the above.
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An example of Kinetic energy would be:a)a moving car b)a charge particle in an electric field.c)a stretched rubber band just released.d)all of the above.Correct answer is option 'D'. Can you explain this answer?
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