AP EAMCET · PHYSICS · Work Power Energy
A constant power of \(7 \mathrm{~W}\) is supplied on a toy car of mass \(15 \mathrm{~kg}\). The distance travelled by the car when its velocity increases from \(3 \mathrm{~ms}^{-1}\) to \(5 \mathrm{~ms}^{-1}\) is
- A \(56 \mathrm{~m}\)
- B \(7 \mathrm{~m}\)
- C \(61 \mathrm{~m}\)
- D \(70 \mathrm{~m}\)
Answer & Solution
Correct Answer
(D) \(70 \mathrm{~m}\)
Step-by-step Solution
Detailed explanation
Given, \(P=7 \mathrm{~W}\), mass, \(m=15 \mathrm{~kg}\), \(v_i=3 \mathrm{~ms}^{-1} \text { and } v_f=5 \mathrm{~ms}^{-1}\) From work-energy theorem,…
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