363506
The velocity \({v}\) versus time \({t}\) graph of a particle (mass \({=2 {~kg}}\) ) between two instants is shown in the figure. The average force of impulse between two positions \({A}\) and \({B}\) is
1 \(33.3\,N\)
2 \(35\,N\)
3 \(40\,N\)
4 \(100\,N\)
Explanation:
Force \({=\dfrac{\text { Change in momentum }}{\text { Time }}}\) \({=\dfrac{2 \times 10-2 \times(5)}{0.5-0.2}=\dfrac{10}{0.3}=33.3 {~N}}\)
PHXI05:LAWS OF MOTION
363507
Assertion : A table cloth can be pulled from a table without dislodging the dishes. Reason : To every action there is an equal and opposite reaction
1 Both assertion and reason are correct and reason is the correct explanation of assertion.
2 Both assertion and reason are correct but reason is not the correct explanation of assertion.
3 Assertion is correct but reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
Conceptual Question
PHXI05:LAWS OF MOTION
363508
A ball is travelling with uniform translatory motion. This means that
1 It is at rest
2 The path can be a straight line or circular and the ball travels with uniform speed
3 All parts of the ball have the same velocity (magnitude and direction) and the velocity is constant
4 The centre of the ball moves with constant velocity and the ball spins about its centre uniformly
Explanation:
In uniform translatory motion, all parts of the ball have the same velocity in magnitude and direction, and this velocity is constant.
NCERT Exemplar
PHXI05:LAWS OF MOTION
363509
An object is thrown vertically upward with a non-zero velocity. If gravity is turned off at the instant the object reaches the maximum height, what happens?
363506
The velocity \({v}\) versus time \({t}\) graph of a particle (mass \({=2 {~kg}}\) ) between two instants is shown in the figure. The average force of impulse between two positions \({A}\) and \({B}\) is
1 \(33.3\,N\)
2 \(35\,N\)
3 \(40\,N\)
4 \(100\,N\)
Explanation:
Force \({=\dfrac{\text { Change in momentum }}{\text { Time }}}\) \({=\dfrac{2 \times 10-2 \times(5)}{0.5-0.2}=\dfrac{10}{0.3}=33.3 {~N}}\)
PHXI05:LAWS OF MOTION
363507
Assertion : A table cloth can be pulled from a table without dislodging the dishes. Reason : To every action there is an equal and opposite reaction
1 Both assertion and reason are correct and reason is the correct explanation of assertion.
2 Both assertion and reason are correct but reason is not the correct explanation of assertion.
3 Assertion is correct but reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
Conceptual Question
PHXI05:LAWS OF MOTION
363508
A ball is travelling with uniform translatory motion. This means that
1 It is at rest
2 The path can be a straight line or circular and the ball travels with uniform speed
3 All parts of the ball have the same velocity (magnitude and direction) and the velocity is constant
4 The centre of the ball moves with constant velocity and the ball spins about its centre uniformly
Explanation:
In uniform translatory motion, all parts of the ball have the same velocity in magnitude and direction, and this velocity is constant.
NCERT Exemplar
PHXI05:LAWS OF MOTION
363509
An object is thrown vertically upward with a non-zero velocity. If gravity is turned off at the instant the object reaches the maximum height, what happens?
363506
The velocity \({v}\) versus time \({t}\) graph of a particle (mass \({=2 {~kg}}\) ) between two instants is shown in the figure. The average force of impulse between two positions \({A}\) and \({B}\) is
1 \(33.3\,N\)
2 \(35\,N\)
3 \(40\,N\)
4 \(100\,N\)
Explanation:
Force \({=\dfrac{\text { Change in momentum }}{\text { Time }}}\) \({=\dfrac{2 \times 10-2 \times(5)}{0.5-0.2}=\dfrac{10}{0.3}=33.3 {~N}}\)
PHXI05:LAWS OF MOTION
363507
Assertion : A table cloth can be pulled from a table without dislodging the dishes. Reason : To every action there is an equal and opposite reaction
1 Both assertion and reason are correct and reason is the correct explanation of assertion.
2 Both assertion and reason are correct but reason is not the correct explanation of assertion.
3 Assertion is correct but reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
Conceptual Question
PHXI05:LAWS OF MOTION
363508
A ball is travelling with uniform translatory motion. This means that
1 It is at rest
2 The path can be a straight line or circular and the ball travels with uniform speed
3 All parts of the ball have the same velocity (magnitude and direction) and the velocity is constant
4 The centre of the ball moves with constant velocity and the ball spins about its centre uniformly
Explanation:
In uniform translatory motion, all parts of the ball have the same velocity in magnitude and direction, and this velocity is constant.
NCERT Exemplar
PHXI05:LAWS OF MOTION
363509
An object is thrown vertically upward with a non-zero velocity. If gravity is turned off at the instant the object reaches the maximum height, what happens?
363506
The velocity \({v}\) versus time \({t}\) graph of a particle (mass \({=2 {~kg}}\) ) between two instants is shown in the figure. The average force of impulse between two positions \({A}\) and \({B}\) is
1 \(33.3\,N\)
2 \(35\,N\)
3 \(40\,N\)
4 \(100\,N\)
Explanation:
Force \({=\dfrac{\text { Change in momentum }}{\text { Time }}}\) \({=\dfrac{2 \times 10-2 \times(5)}{0.5-0.2}=\dfrac{10}{0.3}=33.3 {~N}}\)
PHXI05:LAWS OF MOTION
363507
Assertion : A table cloth can be pulled from a table without dislodging the dishes. Reason : To every action there is an equal and opposite reaction
1 Both assertion and reason are correct and reason is the correct explanation of assertion.
2 Both assertion and reason are correct but reason is not the correct explanation of assertion.
3 Assertion is correct but reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
Conceptual Question
PHXI05:LAWS OF MOTION
363508
A ball is travelling with uniform translatory motion. This means that
1 It is at rest
2 The path can be a straight line or circular and the ball travels with uniform speed
3 All parts of the ball have the same velocity (magnitude and direction) and the velocity is constant
4 The centre of the ball moves with constant velocity and the ball spins about its centre uniformly
Explanation:
In uniform translatory motion, all parts of the ball have the same velocity in magnitude and direction, and this velocity is constant.
NCERT Exemplar
PHXI05:LAWS OF MOTION
363509
An object is thrown vertically upward with a non-zero velocity. If gravity is turned off at the instant the object reaches the maximum height, what happens?
