GK
PHYSICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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mass x height x gravity
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mass x velocity2
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mass x velocity2 ÷ 2
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None of the above
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Detailed explanation-1: -Kinetic energy is directly proportional to the mass of the object and to the square of its velocity: K.E. = 1/2 m v2.
Detailed explanation-2: -In classical mechanics, kinetic energy (KE) is equal to half of an object’s mass (1/2*m) multiplied by the velocity squared. For example, if a an object with a mass of 10 kg (m = 10 kg) is moving at a velocity of 5 meters per second (v = 5 m/s), the kinetic energy is equal to 125 Joules, or (1/2 * 10 kg) * 5 m/s2.
Detailed explanation-3: -Because the object is accelerating at a constant rate, the average velocity is (v + u) / 2 and since u = 0 then average velocity is v / 2. Also remember that a = change in velocity / time, so a = (v – 0) / t = v / t.
Detailed explanation-4: -E=12mv2. This formula states the concept of kinetic energy. So we are using this formula to define the kinetic energy. Complete step by step answer: Kinetic energy is the energy that is possessed by a body by its motion.
Detailed explanation-5: -Translational kinetic energy of a body is equal to one-half the product of its mass, m, and the square of its velocity, v, or 1/2mv2.