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Q. No.The study of motion of objects, without consideration of its cause, is:
1. statics
2. kinematics
3. mechanics
4. dynamics
1. statics
2. kinematics
3. mechanics
4. dynamics
Subtopic: Distance & Displacement |
88%
From NCERT
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Which of the following statements is true about the motion depicted in the diagram?
| 1. | The acceleration is constant and non-zero. |
| 2. | The velocity changes suddenly during the motion. |
| 3. | The velocity is positive throughout. |
| 4. | All of the above are true. |
Subtopic: Graphs |
65%
From NCERT
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The position of an object moving along the \(x\text-\)axis is given by, \(x=a+bt^2\), where \(a=8.5 ~\text m,\) \(b=2.5~\text{m/s}^2,\) and \(t\) is measured in seconds. Its velocity at \(t=2.0~\text s\) will be:
1. \(13~\text{m/s}\)
2. \(17~\text{m/s}\)
3. \(10~\text{m/s}\)
4. \(0~\text{m/s}\)
Subtopic: Instantaneous Speed & Instantaneous Velocity |
87%
From NCERT
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The displacement-time \((s\text-t)\) graphs of two moving particles \(A~\text{and}~B\) make angles of \(30^\circ\) and \(45^\circ\) with the \(x\text-\)axis as shown in the figure. The ratio of their respective velocity \(\left(\dfrac{v_A}{v_B}\right) \) is:
1. \(1: \sqrt{3}\)
2. \(\sqrt{3}: 1\)
3. \(1:1\)
4. \(1:2\)
1. \(1: \sqrt{3}\)
2. \(\sqrt{3}: 1\)
3. \(1:1\)
4. \(1:2\)
Subtopic: Graphs |
73%
From NCERT
NEET - 2022
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A graph of \(x\) versus \(t\) is shown in the figure. Choose correct alternatives from below.
Choose the correct option:
| (a) | The particle was released from rest at \(t = 0\). |
| (b) | At \(B,\) the acceleration \(a > 0\). |
| (c) | At \(C,\) the velocity and the acceleration vanish. |
| (d) | Average velocity for the motion between \(A\) and \(D\) is positive. |
| (e) | The speed at \(D\) exceeds that at \(E\). |
Choose the correct option:
| 1. | (b), (c), (d) | 2. | (a), (b), (c), (d) |
| 3. | (a), (d) | 4. | (a), (c), (e) |
Subtopic: Graphs |
From NCERT
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If in one-dimensional motion, instantaneous speed \(v\) satisfies \(0\leq v<v_0,\) then:
| 1. | the displacement in time \(T\) must always take non-negative values. |
| 2. | the displacement \(x\) in time \(T\) satisfies \(-{v_0T} \lt x \lt {v_0T}.\) |
| 3. | the acceleration is always a non-negative number. |
| 4. | the motion has no turning points. |
Subtopic: Instantaneous Speed & Instantaneous Velocity |
55%
From NCERT
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A particle is moving along the \(x\text-\)axis with its position \((x)\) varying with time \((t)\) as \(x=\alpha t^{4}+\beta t^{2}+\gamma t+\delta.\) The ratio of its initial velocity to its initial acceleration is:
1. \(2\alpha:\delta \)
2. \(\gamma:2\delta \)
3. \(4\alpha:\beta \)
4. \(\gamma:2\beta \)
1. \(2\alpha:\delta \)
2. \(\gamma:2\delta \)
3. \(4\alpha:\beta \)
4. \(\gamma:2\beta \)
Subtopic: Instantaneous Speed & Instantaneous Velocity |
80%
From NCERT
NEET - 2024
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Among the four graphs shown in the figure, there is only one graph for which average velocity over the time interval \((0,T)\) can vanish for a suitably chosen \(T\). Select the graph.
| 1. |  |
2. |  |
| 3. |  |
4. |  |
Subtopic: Graphs |
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A Cheetah can accelerate from \(0\) to \(96\) km/h in \(2\) s. What is the average acceleration of the Cheetah?
1. \(10\) m/s2
2. \(13.3\) m/s2
3. \(15\) m/s2
4. \(48\) m/s2
Subtopic: Acceleration |
74%
From NCERT
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A particle moving along x-direction has at any instant its x-coordinate given by, \(x = 2-5t+6t^2.\) The initial velocity of the particle is (\(x\) is in meter and \(t\) is in seconds):
1. \(2\) m/s
2. \(-5\) m/s
3. \(3\) m/s
4. \(12\) m/s
1. \(2\) m/s
2. \(-5\) m/s
3. \(3\) m/s
4. \(12\) m/s
Subtopic: Instantaneous Speed & Instantaneous Velocity |
83%
From NCERT
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