WBJEE · Physics · Motion In One Dimension
At a particular height, the velocity of an ascending body is \(\mathbf{u}\). The velocity at the same height while the body falls freely is
- A \(2 \mathbf{u}\)
- B \(-\mathbf{u}\)
- C \(\mathbf{u}\)
- D \(-2 \mathbf{u}\)
Answer & Solution
Correct Answer
(B) \(-\mathbf{u}\)
Step-by-step Solution
Detailed explanation
Given that velocity of ascending body = u Let there is no air resistance when body falls freely in downward direction, the direction of falling body will opposite to the ascending body. \(\therefore\) The velocily at the same height while the body falls freely \(=-u\)
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