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प्रश्न
The kinetic energy of a body is the energy by virtue of its ______.
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उत्तर
The kinetic energy of a body is the energy by virtue of its motion.
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संबंधित प्रश्न
What is the kinetic energy of an object?
A bullet of mass 50 g is moving with a velocity of 500 m s−1. It penetrated 10 cm into a still target and comes to rest. Calculate:
- the kinetic energy possessed by the bullet, and
- the average retarding force offered by the target.
A body of mass 10 kg is moving with a velocity 20 m s-1. If the mass of the body is doubled and its velocity is halved, find:
- the initial kinetic energy, and
- the final kinetic energy.
Find the momentum of a body of mass 100 g having a kinetic energy of 20 J.
A horse and a dog are running with the same speed. If the weight of the horse is ten times that of the dog, What is the ration of their kinetic energies?
Which of the following does not posses the ability to do work not because of motion?
Derive the formula for the kinetic energy of an object of mass m, moving with velocity v.
If an object has 0 momentum, does it have kinetic energy? Explain your answer.
The energy possessed by a cricket ball bowled by a player is ______.
A car of mass 120 kg is moving at a speed 18 km/h and it accelerates to attain a speed of 54 km/h in 5 seconds. Calculate:
- the work done by the engine.
- the power of the engine.
