A body starts from the origin and moves along the X-axis such that the velocity at any instant is given by \( ( 4 𝑑^ 3 βˆ’ 2 𝑑 )\), where \(t\) is in sec and velocity in m/s. What is the acceleration of the particle when it is \(2\ \text{m}\) from the origin?

1. \(28\ \text{m/s}^2\)

2. \(22\ \text{m/s}^2\)

3. \(12\ \text{m/s}^2\)

4. \(10\ \text{m/s}^2\)

Subtopic: Β Non Uniform Acceleration |
Β 64%
Level 2: 60%+
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The acceleration of a moving body can be found from: 

1. Area under the velocity-time graph

2. Area under the distance-time graph

3. Slope of the velocity-time graph

4. Slope of the distance-time graph

Subtopic: Β Graphs |
Β 76%
Level 2: 60%+
PMT - 1981
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A particle starting from rest, moving with constant acceleration, travels a distance \(x\) in first \(2\) seconds and a distance \(y\) in the next two seconds, then: 

1. \(y = x\)

2. \(y = 2x\)

3. \(y = 3x\)

4. \(y = 4x\)

Subtopic: Β Uniformly Accelerated Motion |
Β 55%
Level 3: 35%-60%
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The velocity of a body depends on time according to the equation \(𝑣 = 20 + 0 .1 \ 𝑑^ 2\). The body is undergoing:

1. Uniform acceleration

2. Uniform retardation

3. Non-uniform acceleration

4. Zero acceleration

Subtopic: Β Non Uniform Acceleration |
Β 67%
Level 2: 60%+
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A particle moving with a uniform acceleration travels \(24\) m and \(64\) m in the first two consecutive intervals of \(4~\text{s}\) each. Its initial velocity is:
1. \(1~\text{m/s}\)
2. \(10~\text{m/s}\)
3. \(5~\text{m/s}\)
4. \(2~\text{m/s}\)
Subtopic: Β Uniformly Accelerated Motion |
Level 3: 35%-60%
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The position of a particle moving in the XY plane at any time \(t\) is given by \(π‘₯ = ( 3 𝑑^ 2 βˆ’ 6 𝑑 )\) metres, \(y=(t^2-2t)\) metres. Select the correct statement about the moving particle from the following.

1. The acceleration of the particle is zero at \(t = 0\) second
2. The velocity of the particle is zero at \(t = 0\) second
3. The velocity of the particle is zero at \(t = 1\) second
4. The velocity and acceleration of the particle are never zero

Subtopic: Β Instantaneous Speed & Instantaneous Velocity |
Β 74%
Level 2: 60%+
PMT - 1995
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Two cars \(A\) and \(B\) are travelling in the same direction with velocities \(v_1\) and \(v_2 (v_1>v_2)\). When the car \(A\) is at a distance \(d\) behind car \(B\), the driver of the car \(A\) applied the brake producing uniform retardation \(a\). There will be no collision when:
1. \(d< \dfrac{(v_1-v_2)^2}{2a}\)

2. \(d< \dfrac{v^2_1-v^2_2}{2a}\)

3. \(d> \dfrac{(v_1-v_2)^2}{2a}\)

4. \(d> \dfrac{v^2_1-v^2_2}{2a}\)

Subtopic: Β Relative Motion in One Dimension |
Β 56%
Level 3: 35%-60%
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A body moves from rest with a constant acceleration of \(5\ \text{m/s}^2\). Its instantaneous speed (in m/s) at the end of \(10\ \text{s}\) is  

1. \(50\)
2. \(5\)
3. \(2\)
4. \(0.5\)

Subtopic: Β Instantaneous Speed & Instantaneous Velocity |
Β 86%
Level 1: 80%+
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The acceleration \(a\) in m/s2 of a particle is given by a=3t2+2t+2 where t is the time. If the particle starts out with a velocity, \(u=2\) m/s at t = 0, then the velocity at the end of \(2\) seconds will be:
1. \(12\) m/s
2. \(18\) m/s
3. \(27\) m/s
4. \(36\) m/s

Subtopic: Β Acceleration |
Β 75%
Level 2: 60%+
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The displacement of a particle starting from rest (at \(t = 0\)) is given by \(𝑠 = 6 𝑑^ 2 βˆ’ 𝑑^ 3\). The time in seconds at which the particle will attain zero velocity again is:  

1. \(2\)
2. \(4\)
3. \(6\)
4. \(8\)

Subtopic: Β Instantaneous Speed & Instantaneous Velocity |
Β 80%
Level 1: 80%+
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