| 1. | is constant in magnitude only |
| 2. | is constant in direction |
| 3. | is constant in magnitude and direction |
| 4. | varies, both in magnitude and direction |
| (A) | distance travelled by \(A\) = distance travelled by \(B\) |
| (B) | acceleration time of \(A\) = \(\dfrac12\) acceleration time of \(B\) |
| (C) | relative velocity of \(A\) with respect to \(B\) is always positive |
| (D) | deceleration time of \(A\) = \(2×\) deceleration time of \(B\) |
| 1. | (A) is True. |
| 2. | (A), (B) are True. |
| 3. | (A), (B), (C) are True. |
| 4. | (B), (C), (D) are True. |
| 1. | \(1~\text{m/s}\) along the positive \(x\)-axis |
| 2. | \(1~\text{m/s}\) along the negative \(x\)-axis |
| 3. | \(\dfrac{1}{\sqrt2} ~\text{m/s}\) along the positive \(x\)-axis |
| 4. | \(\dfrac{1}{\sqrt2}~\text{m/s}\) along the negative \(x\)-axis |
A man driving a scooter at \(15~\text{m/s}\) brakes at the rate of \(2~\text{m/s}^2\). His speed, after \(10~\text{s}\) after the application of brakes will be:
1. \(5~\text{m/s}\)
2. \(-5~\text{m/s}\)
3. \(0~\text{m/s}\)
4. \(10~\text{m/s}\)
A boy throws a ball straight up the side of a building and receives it after \(4~\text s.\) On the other hand, if he throws it so that it strikes a ledge on its way up, it returns to him after \(3~\text s.\) The ledge is at a distance \(d\) below the highest point, where \(d=? \) (take acceleration due to gravity, \(g=10~\text{ms}^{-2})\)
1. \(5~\text m\)
2. \(2.5~\text m\)
3. \(1.25~\text m\)
4. \(10~\text m\)
| 1. | \(1~\text{ms}^{-1}\) | 2. | \(2~\text{ms}^{-1}\) m/s |
| 3. | less than \(1~\text{ms}^{-1}\) | 4. | greater than \(2~\text{ms}^{-1}\) |
| Column-I | Column-II | ||
| \(\mathrm{(A)}\) | \(a_{\Large_A}=a_{\Large_B}\neq 0\) | \(\mathrm{(I)}\) | ![]() |
| \(\mathrm{(B)}\) | \(a_{\Large_A}>a_{\Large_B},u_{\Large_A}<u_{\Large_B}\) | \(\mathrm{(II)}\) | ![]() |
| \(\mathrm{(C)}\) | \(a_{\Large_A}<a_{\Large_B},u_{\Large_A}=u_{\Large_B}\) | \(\mathrm{(III)}\) | ![]() |
| \(\mathrm{(D)}\) | \(a_{\Large_A}<a_{\Large_B},u_{\Large_A}<u_{\Large_B}\) | \(\mathrm{(IV)}\) | ![]() |
| 1. | \(\mathrm{A\text-II,B\text-I,C\text-IV,D\text-III}\) | 2. | \(\mathrm{A\text-III,B\text-IV,C\text-II,D\text-I}\) |
| 3. | \(\mathrm{A\text-II,B\text-IV,C\text-III,D\text-I}\) | 4. | \(\mathrm{A\text-III,B\text-I,C\text-II,D\text-IV}\) |