Self Studies

Motion in A Str...

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  • Question 1
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    A stone is thrown vertically upward with a velocity of 34.3 m/s from the top of a cliff 147 m high . after it reaches the foot of the cliff, the mine elapsed will be :

  • Question 2
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    Water drugs full from a tap on the floor 5 m below  at regular intervals of time, The first drop beings to fall. The height at which the third drop will be from ground (at the instant when the first drop strikes the ground) will be (g=10ms2)\left( g=10{ ms }^{ -2 } \right)

  • Question 3
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    When a body is accelerated: (i) its velocity always changes (ii) its speed always changes (iii) its direction always changes (iv) its speed may or may not change Which of the following is correct?

  • Question 4
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    A stone falls from a balloon that is descending at a uniform rate of 12m/s. the displacement of the stone from the point of release 10 sec is

  • Question 5
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    An object falls freely from rest in a vacuum. The graph shows the variation with time t of the
    velocity vv of the object.
    Which graph, using the same scales, represents the object falling in air?

  • Question 6
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    In the two dimensional motions:

  • Question 7
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    An object has an initial velocity uu and an acceleration aa. The object moves in a straight line
    through a displacement s and has final velocity vv.
    The above quantities are related by the equation shown.
    v2 =u2 +2asv^{2}  = u^{2}  + 2as
    Which condition must be satisfied in order for this equation to apply to the motion of the object?

  • Question 8
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    The velocity-time graph of a body is shown in Fig.4.116. The displacement of the body in 8 s is

  • Question 9
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    Two particles A and B move from rest along a straight line with constant accelerations f and h respectively. If A takes m seconds more than B and describes n units more than that of B acquiring the same speed, then?

  • Question 10
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    If x=a(cosθ+θsinθ)x= a ( cos\theta+\theta sin\theta) and y=a(sinθθcosθ)y= a( sin\theta -\theta cos \theta) and θ\theta increases at uniform rate ω\omega. The velocity of particle is 

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