141247 The driver of a bus moving at an speed of 60 \(\mathrm{km} / \mathrm{hr}\) saw a man at a distance of \(52 \mathrm{~m}\) from the bus. The driver stopped the car at a distance of \(2 \mathrm{~m}\) from the man using brake. The time required to stop the bus is

141239 Assertion: The position-time graph of a uniform motion in one dimension of a body can have negative slope.
Reason: When the speed of body decreases with time, the position-time graph of the moving body has negative slope.

141248 All the graphs below are intended to represent the same motion. One of them does it incorrectly. Pick it up.

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141249 A toy car with charge \(q\) moves on a frictionless horizontal plane surface under the influence of a uniform electric field \(E\). Due to the force \(q E\), its velocity increases from 0 to \(6 \mathrm{~m} / \mathrm{s}\) in one second duration. At that instant, the direction of the field is reversed. The car continues to move for two more seconds under the influence of this field. The average velocity and the average speed of the toy car between 0 to 3 seconds are respectively

141247 The driver of a bus moving at an speed of 60 \(\mathrm{km} / \mathrm{hr}\) saw a man at a distance of \(52 \mathrm{~m}\) from the bus. The driver stopped the car at a distance of \(2 \mathrm{~m}\) from the man using brake. The time required to stop the bus is

141239 Assertion: The position-time graph of a uniform motion in one dimension of a body can have negative slope.
Reason: When the speed of body decreases with time, the position-time graph of the moving body has negative slope.

141248 All the graphs below are intended to represent the same motion. One of them does it incorrectly. Pick it up.

1

2

3

4

141249 A toy car with charge \(q\) moves on a frictionless horizontal plane surface under the influence of a uniform electric field \(E\). Due to the force \(q E\), its velocity increases from 0 to \(6 \mathrm{~m} / \mathrm{s}\) in one second duration. At that instant, the direction of the field is reversed. The car continues to move for two more seconds under the influence of this field. The average velocity and the average speed of the toy car between 0 to 3 seconds are respectively

141247 The driver of a bus moving at an speed of 60 \(\mathrm{km} / \mathrm{hr}\) saw a man at a distance of \(52 \mathrm{~m}\) from the bus. The driver stopped the car at a distance of \(2 \mathrm{~m}\) from the man using brake. The time required to stop the bus is

141239 Assertion: The position-time graph of a uniform motion in one dimension of a body can have negative slope.
Reason: When the speed of body decreases with time, the position-time graph of the moving body has negative slope.

141248 All the graphs below are intended to represent the same motion. One of them does it incorrectly. Pick it up.

1

2

3

4

141249 A toy car with charge \(q\) moves on a frictionless horizontal plane surface under the influence of a uniform electric field \(E\). Due to the force \(q E\), its velocity increases from 0 to \(6 \mathrm{~m} / \mathrm{s}\) in one second duration. At that instant, the direction of the field is reversed. The car continues to move for two more seconds under the influence of this field. The average velocity and the average speed of the toy car between 0 to 3 seconds are respectively

141247 The driver of a bus moving at an speed of 60 \(\mathrm{km} / \mathrm{hr}\) saw a man at a distance of \(52 \mathrm{~m}\) from the bus. The driver stopped the car at a distance of \(2 \mathrm{~m}\) from the man using brake. The time required to stop the bus is

141239 Assertion: The position-time graph of a uniform motion in one dimension of a body can have negative slope.
Reason: When the speed of body decreases with time, the position-time graph of the moving body has negative slope.

141248 All the graphs below are intended to represent the same motion. One of them does it incorrectly. Pick it up.

1

2

3

4

141249 A toy car with charge \(q\) moves on a frictionless horizontal plane surface under the influence of a uniform electric field \(E\). Due to the force \(q E\), its velocity increases from 0 to \(6 \mathrm{~m} / \mathrm{s}\) in one second duration. At that instant, the direction of the field is reversed. The car continues to move for two more seconds under the influence of this field. The average velocity and the average speed of the toy car between 0 to 3 seconds are respectively