AP EAMCET · PHYSICS · Motion In One Dimension
A cannon ball is fired from the top of a \(55 \mathrm{~m}\) high cliff with an initial speed of \(50 \mathrm{~m} \mathrm{~s}^{-1}\). The speed of the cannon ball while hitting the ground in \(\mathrm{m} \mathrm{s}^{-1}\) (acceleration due to. gravity \(=10 \mathrm{~ms}^{-2}\) )
- A \(50\)
- B \(60\)
- C \(33.2\)
- D \(83.2\)
Answer & Solution
Correct Answer
(B) \(60\)
Step-by-step Solution
Detailed explanation
The given situation is shown below According to work-energy theorern, Initial K. E of cannon ball + Gravitational P.E \(=\) Total K. E at ground \(\Rightarrow \quad \frac{1}{2} m v_1^2+m g h=\frac{1}{2} m v_2^2\)…
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