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प्रश्न
Fill in the blank with suitable word :
The ability of a body to do work is called __________. The ability of a body to do work because of its motion is called __________.
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उत्तर
The ability of a body to do work is called energy. The ability of a body to do work because of its motion is called kinetic energy.
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संबंधित प्रश्न
In what way does the temperature of water at the bottom of a waterfall differ from the temperature at the top? Explain the reason.
State whether the object possess kinetic energy, potential energy, or both :
A bird running on the ground ____________.
What kind of energy is possessed by the following?
Water stored in the reservoir of a dam __________.
Fill in the blank with suitable word :
The sum of the potential and kinetic energies of a body is called __________ energy.
What type of energy is possessed : by the piece of stone which is thrown away on releasing the stretched rubber strings of catapult?
Name the device or machine which convert :
Mechanical energy into electrical energy.
Name the device or machine which convert :
light energy into heat energy.
What is the meaning of the symbol kWh? What quantity does it represent?
Name the energy transfers which occur when :
an electric ball rings
An automobile engine propels a 1000 kg car (A) along a levelled road at a speed of 36 km h–1. Find the power if the opposing frictional force is 100 N. Now, suppose after travelling a distance of 200 m, this car collides with another stationary car (B) of the same mass and comes to rest. Let its engine also stop at the same time. Now the car (B) starts moving on the same level road without getting its engine started. Find the speed of the car (B) just after the collision.
