COMEDK · Physics · 3. Motion In One Dimension
A car covers the first half distance between two places at \(40 \mathrm{kmph}\) and the other half at \(60 \mathrm{kmph}\). The average speed of the car is
- A \(48 \mathrm{kmph}\)
- B \(120 \mathrm{kmph}\)
- C \(50 \mathrm{kmph}\)
- D \(24 \mathrm{kmph}\)
Answer & Solution
Correct Answer
(A) \(48 \mathrm{kmph}\)
Step-by-step Solution
Detailed explanation
The given situation is shown below Let the distance between the twro places is \(x \mathrm{~km}\). \[ \therefore \quad A M=M B=\frac{x}{2} \mathrm{~km} \] Time taken by the car to cover first half \((A M)\) with the speed of \(40 \mathrm{~km} / \mathrm{h}\) is given as…
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