Advertisements
Advertisements
प्रश्न
How is kinetic energy possessed by a moving body measured?
Advertisements
उत्तर
The kinetic energy possessed by a moving body is measured by the amount of work done by an opposing force in bringing the body to rest from its present state of motion.
संबंधित प्रश्न
A cyclist doubles his speed. How will his kinetic energy change: increase, decrease or remain same ?
Name three non-renewable sources of energy.
Name the energy changes for each of the following cases:
dynamo
A pebble is thrown up. It goes to a height and then comes back on the ground. State the different changes in form of energy during its motion.
Is it possible that a body may possess energy even when it is not in motion?
What kind of energy is possessed in a situation when?
A shooting arrow.
Write the type of energy possessed in the following case:
A bent bow
Show that in case of a body falling freely under gravity, total mechanical energy remains conserved (neglect air resistance).
A ball of mass 50 g falls from a height of 2m and rebounds from the ground to 1.6 m. Find:
(i) The potential energy possessed by the ball when initially at rest.
(ii) The kinetic energy of the ball before it hits the ground.
(iii) The final potential energy of the ball.
(iv) The loss in kinetic energy of the ball on collision. (Take: g = 10N kg−1)
What is the difference between the solid, liquid, and gaseous states of a substance?
