AP EAMCET · PHYSICS · Work Power Energy
When the mass and speed of the body are doubled, the kinetic energy of the body
- A becomes double
- B becomes four times
- C becomes eight times
- D remains unchanged
Answer & Solution
Correct Answer
(C) becomes eight times
Step-by-step Solution
Detailed explanation
Given that, the mass and speed of body are doubled. Then, final kinetic energy, \[ \mathrm{KE}_f=\frac{1}{2}(2 m)(2 v)^2=\left(\frac{1}{2} m v^2\right) 8 \] where, \(m\) and \(v\) are initial mass and speed. Here, initial kinetic energy, \(\mathrm{KE}_i=\frac{1}{2} m v^2\)…
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