Question : Which of the statements is not correct regarding energy?
Option 1: The energy possessed by a body due to its change in position or shape is called potential energy.
Option 2: An object of mass m moving with velocity v has a kinetic energy of (mv)/2.
Option 3: The gravitational potential energy of an object of mass, M raised through a height, H from the Earth's surface is given by MgH.
Option 4: An object in motion possesses what is known as the kinetic energy of the object.
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Correct Answer: An object of mass m moving with velocity v has a kinetic energy of (mv)/2.
Solution : The correct option is an object of mass m moving with velocity v has a kinetic energy of (mv)/2.
The incorrect statement asserts that the kinetic energy of an object with mass "m" and velocity "v" is (mv)/2. However, the accurate formula for kinetic energy is 1/2(mv 2 ), emphasising the squared velocity term. The correct expression reflects the kinetic energy's dependence on the square of the object's velocity.
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