- 1(current)
Q. No.A ball \((A)\) is projected vertically upward; a second ball \((B)\) is projected horizontally with the same initial speed as the first. The relative velocity of ball \(A\) with respect to \(B\):
| 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 |
Subtopic: Â Relative Motion in One Dimension |
Level 3: 35%-60%
Hints
A ball is thrown vertically upward and it reaches the highest point in \(4~\text s.\) Immediately, a second ball is thrown upwards with an initial speed that is twice that of the first. The second ball meets the first after a time:
1. \(1~\text s\)
2. \(2~\text s\)
3. \(3~\text s\)
4. \(4~\text s\)
Subtopic: Â Relative Motion in One Dimension |
Level 3: 35%-60%
Please attempt this question first.
Hints
Please attempt this question first.
Two cars \(A\) and \(B,\) each \(5~\text{m}\) long, are travelling along parallel lanes with speeds of \(36~\text{km/hr}\) and \(72~\text{km/hr}.\) The car \(B\) is just behind the car \(A,\) but is beginning to overtake. What will be the distance covered by the car \(B\) by the time it is just ahead of the car \(A?\)
1. \(10~\text{m}\)
2. \(15~\text{m}\)
3. \(20~\text{m}\)
4. \(25~\text{m}\)
1. \(10~\text{m}\)
2. \(15~\text{m}\)
3. \(20~\text{m}\)
4. \(25~\text{m}\)
Subtopic: Â Relative Motion in One Dimension |
Level 3: 35%-60%
Hints
- 1(current)
Q. No.
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