If the speed of an object is doubled, its Kinetic Energy will
Correct answer: A. increase by 4 times
- A. increase by 4 times
- B. Decrease by 4 times
- C. First increase then decrease
- D. Remain the same
Explanation
Kinetic energy (KE) is given by the formula:KE = 1/2 * mv^2Where:KE is the kinetic energym is the mass of the objectv is the velocity of the objectIf the speed of an object is doubled, its velocity becomes 2v. Therefore, the new kinetic energy will be:KE' = 1/2 * m * (2v)^2 = 1/2 * m * 4v^2 = 4 * (1/2 * mv^2) = 4KETherefore, the kinetic energy of the object will increase by 4 times
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About Work and Energy
Work transfers energy when a force causes displacement, while kinetic energy, gravitational potential energy and power describe motion, position and the rate of energy transfer. The work-energy theorem links net work with change in kinetic energy, and efficiency accounts for energy losses rather than treating them as energy destruction.
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