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Easy
Question
If the straight lines x=1+s,y=3λs,z=1+λs and , z=2t, with parameters s and t respectively, are co planar, then λ=
 2
 0

 1
The correct answer is: 2
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If 5 cas
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A boy begins to walk eastward along a street infront of his house and the graph of his displacement from home is shown in the following figure. His average speed for in the wholetime interval is equal to
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The values of satisfying and are
The values of satisfying and are
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A body of mass is resting on a wedge of angle as shown in figure. The wedge is given at acceleration . What is the value of a son that the mass just falls freely?
The horizontal acceleration of the wedge should be such that in time the wedge moves the horizontal distance . The body must fall through a vertical distance under gravity. Hence,
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The horizontal acceleration of the wedge should be such that in time the wedge moves the horizontal distance . The body must fall through a vertical distance under gravity. Hence,
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A cyclist starts from the centre of a circular park of radius one kilometre, reaches the edge of the park, then cycles along the circumference and returns to the centre along as shown in figure. If the round trip takes ten minutes, the net displacement and average speed of the cyclist (in metre and kilometre per hour) is
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A cyclist starts from the centre of a circular park of radius one kilometre, reaches the edge of the park, then cycles along the circumference and returns to the centre along as shown in figure. If the round trip takes ten minutes, the net displacement and average speed of the cyclist (in metre and kilometre per hour) is
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A ball is thrown vertically upwards. Which of the following graph/graphs represent velocitytime graph of the ball during its flight (air resistance is neglected)
In the positive region the velocity decreases linearly (during rise) and in the negative region velocity increases linearly (during fall) and the direction is opposite to each other during rise and fall, hence fall is shown in the negative region
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I is not possible because total distance covered by a particle increases with time
II is not possible because at a particular time, position cannot have two values
III is not possible because at a particular time, velocity cannot have two values
IV is not possible because speed can never be negative
II is not possible because at a particular time, position cannot have two values
III is not possible because at a particular time, velocity cannot have two values
IV is not possible because speed can never be negative
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physicsGeneral
I is not possible because total distance covered by a particle increases with time
II is not possible because at a particular time, position cannot have two values
III is not possible because at a particular time, velocity cannot have two values
IV is not possible because speed can never be negative
II is not possible because at a particular time, position cannot have two values
III is not possible because at a particular time, velocity cannot have two values
IV is not possible because speed can never be negative
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I is not possible because total distance covered by a particle increases with time
II is not possible because at a particular time, position cannot have two values
III is not possible because at a particular time, velocity cannot have two values
IV is not possible because speed can never be negative
II is not possible because at a particular time, position cannot have two values
III is not possible because at a particular time, velocity cannot have two values
IV is not possible because speed can never be negative
Which of the following graphs cannot possibly represent one dimensional motion of a particle
physicsGeneral
I is not possible because total distance covered by a particle increases with time
II is not possible because at a particular time, position cannot have two values
III is not possible because at a particular time, velocity cannot have two values
IV is not possible because speed can never be negative
II is not possible because at a particular time, position cannot have two values
III is not possible because at a particular time, velocity cannot have two values
IV is not possible because speed can never be negative
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The solution of is
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If
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As, so
or constant
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As, so
or constant
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From accelerationvelocity graph, we have where is a constant which represents the slope of the given line.
As, so
or constant
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As, so
or constant
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are in are in are in
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are in are in are in
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Solution of is
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If then the general solution of
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