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1. | \(5~\text{m}\) | 2. | \(25~\text{m}\) |
3. | \(45~\text{m}\) | 4. | \(58~\text{m}\) |
1. | \(4~\text{m/s}^2,\) \(2~\text{m/s}\) |
2. | \(2~\text{m/s}^2,\) \(4~\text{m/s}\) |
3. | \(6~\text{m/s}^2,\) \(2~\text{m/s}\) |
4. | \(2~\text{m/s}^2,\) \(6~\text{m/s}\) |
1. | \(180~\text{m}\) | 2. | \(60~\text{m}\) |
3. | \(80~\text{m}\) | 4. | \(18~\text{m}\) |
1. | \(\dfrac{3v}{4}\) | 2. | \(\dfrac{v}{3}\) |
3. | \(\dfrac{2v}{3}\) | 4. | \(\dfrac{4v}{3}\) |
1. | \(68\) m | 2. | \(56\) m |
3. | \(60\) m | 4. | \(64\) m |
A stone is thrown vertically downwards with an initial velocity of \(40\) m/s from the top of a building. If it reaches the ground with a velocity of \(60\) m/s, then the height of the building is: (take \(g=10\) m/s2)
1. | \(120\) m | 2. | \(140\) m |
3. | \(80\) m | 4. | \(100\) m |