Define Kinetic energy? Write the expression for kinetic energy and explain the terms? What will be the kinetic energy of a body at rest?
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Answer:
F=m(2dV2). As we know that Work done =Fd. Putting the value of F, we get, Workdone=(2dmV2)(d)=(2mV2)=21mv2. Therefore, the expression for kinetic energy is 21mv2.
Answer:
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Explanation:
In physics, the kinetic energy of an object is the energy that it possesses due to its motion. It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity. Having gained this energy during its acceleration, the body maintains this kinetic energy unless its speed changes.
The kinetic energy of a body is the energy by virtue of its motion.
K.E=1/2mv^2
where m is mass and v is velocity.
The kinetic energy of a body with mass m moving at a velocity v is one half the product of the mass of the body and the square of its velocity, i.e., KE = 1⁄2mv2. ... Even when a body appears to be at rest, its atoms and molecules are in constant motion and thus have kinetic energy.